Justice Amy Coney Barrett retired a 32-year preemption shield in six pages. Justice Kavanaugh, joined by Justice Alito, wrote the price tag.
Thursday morning, May 14, the slip opinion in No. 24-1238 hit the Court's electronic docket. Justice Brett Kavanaugh, writing separately and joined by Justice Samuel Alito, had attached six sentences to a unanimous opinion. The six sentences carried a price tag.
"the costs of litigation and insurance, as well as the costs of brokers' conducting more substantial inquiries into trucking companies, will cascade through the economy and be paid in part by American consumers in the form of higher prices."
The market those words land on had run 58 consecutive quarters of premium increases through the fourth quarter of 2025, the longest streak of any commercial property and casualty line by a wide margin. It booked $72.18 billion of direct premium written in 2024, up 12.1 percent year over year per AM Best's annual industry ranking.
The slip opinion dropped four business days after the Bureau of Labor Statistics released the April 2026 Consumer Price Index print showing headline inflation at 3.8 percent year over year, the highest annual print since May 2023, with energy at +17.9 percent and food at +3.2 percent. It dropped one business day after BLS released the April 2026 Producer Price Index for Final Demand Transportation and Warehousing Services at +5.0 percent month over month. The cascade prediction sits in the United States Reports. The macro conditions under which an added cost layer most readily passes to the consumer sat in the BLS release archive when the slip opinion dropped.
Trucking trade press and law-firm client alerts in the five business days since have read Montgomery doctrinally. The FAAAA preemption shield is gone. State-law negligent-hiring claims against freight brokers will now reach the merits. Brokers will litigate, settle, or lose those claims rather than dispose of them on a motion to dismiss. True, all of it. None of it captures the magnitude.
The magnitude sits in the Kavanaugh concurrence. The Court itself, through Kavanaugh and Alito, published a cost-pass-through prediction inside a unanimous opinion. The first time in modern memory a sitting Justice has done so in a freight-transportation case, landing on a 58-quarter rate-increase streak in commercial auto with a $31.3 billion 2024 nuclear-verdict environment running underneath. The cascade is on the calendar.
The majority opinion was authored by Justice Amy Coney Barrett. It was unanimous. It was, in the characterization of Transport Topics's same-day coverage, "remarkably concise" at roughly six pages. There was no dissent. Justice Sonia Sotomayor did not write the opinion, despite early-cycle intake confusion in some trade-press summaries that briefly attributed it to her; the official slip opinion as posted by the Court and reproduced by Cornell Legal Information Institute names Barrett as the author and notes the Kavanaugh concurrence joined by Alito.
Barrett's interpretive move was textualist. The Federal Aviation Administration Authorization Act of 1994 preempts state laws "related to a price, route, or service of any motor carrier or broker." The Act also contains a savings clause preserving state authority "with respect to the safety regulatory authority of a State with respect to motor vehicles." The question presented in Montgomery was whether the savings clause reaches state-law negligent-hiring claims against freight brokers. The Ninth Circuit, in Miller v. C.H. Robinson (2020), said yes. The Seventh Circuit, in Ye v. GlobalTranz (2023), said no. The split lasted three years.
Barrett resolved it by construing "with respect to motor vehicles" to mean "concerns" rather than the narrower "is directed at." The broader reading lets negligent-hiring tort suits fit within the savings clause because such suits concern the safety of motor vehicles even though their immediate object is the broker's hiring conduct. The holding, in Cornell LII's summary of the slip opinion: "A claim that one company negligently hired another to transport goods is not preempted by the FAAAA because States retain authority to regulate safety 'with respect to motor vehicles' under the Act."
Barrett's textualism left the broker bar no daylight for a narrowing construction. The opinion does not adopt a multi-factor test. It does not draw a line that lets some negligent-hiring claims through and stops others at the pleading stage. It identifies one statutory clause, gives it the broader of two ordinary-language readings, and ends. The Faegre Drinker client alert published Thursday afternoon flagged this as the structural problem for the defense bar going forward. Plaintiff counsel will plead within the four corners of Barrett's textualism. Broker defense counsel will litigate ordinary-negligence merits, not preemption.
The Council of Insurance Agents and Brokers Q4 2025 Commercial Property and Casualty Market Index, released in February 2026, reported commercial-auto premiums up 6.6 percent in the fourth quarter of 2025, "the highest out of all lines by a large margin." That increase extended the commercial-auto rate-increase streak to 58 consecutive quarters, an unbroken run since the third quarter of 2011. No other commercial line is in the same neighborhood. Workers' compensation has cycled through soft and hard markets twice in that window. Commercial property had a single-digit-quarter streak that ended with the 2025 reinsurance softening. Commercial auto is the outlier.
Underneath the rate streak is a loss-cost trajectory that explains it. AM Best, in its September 2025 commercial-auto outlook, reported that the average commercial-auto claim cost more than doubled between 2015 and 2024, growing approximately 8 percent annually. The Insurance Information Institute, in its joint analysis with the Casualty Actuarial Society, calculated that the commercial-auto loss-severity index rose 93.5 percent over the same window. S&P Global Market Intelligence projects the commercial-auto combined ratio at 104.4 in 2026, rising to 106.3 by 2029. A combined ratio above 100 means insurers are paying out more than they are taking in on net premium written. The 2026 projection is PROVISIONAL per R2 deep research, sourced through Carrier Management; the directional point that the line was unprofitable on an underwriting basis before Montgomery added a new tort theory to the loss pool is not provisional. It is the documented baseline.
Montgomery adds a new exposure class to that loss pool. The negligent-selection theory against freight brokers had not previously contributed meaningfully to commercial-auto loss costs because FAAAA preemption disposed of the theory at the pleading stage in most jurisdictions. After Montgomery, the theory survives motion-to-dismiss in every federal jurisdiction and most state jurisdictions, which means discovery, which means depositions, which means settlement values calibrated to the new merits-stage litigation cost and the new severity environment.
The 58-quarter rate streak met its next driver. Thursday morning.
The severity environment into which the new exposure class enters is documented in Marathon Strategies's "Corporate Verdicts Go Thermonuclear" annual report, with the 2024 figures released and covered by Transport Topics on 2026-01-23. The headline number is $31.3 billion of nuclear verdicts against corporate defendants in 2024, where "nuclear" is defined as a single verdict of $10 million or more. The 2024 total is up 116 percent over 2023. The case count is 135 in 2024 versus 89 in 2023, a 52 percent year-over-year jump. Within the 135 cases, 49 broke the $100 million threshold, what Marathon labels "thermonuclear," up 81 percent year over year.
The trucking-defendant subset of those nuclear verdicts in 2024 ran eight cases with a combined total of $790.5 million. The trucking and automotive subset combined ran fifteen cases totaling more than $1.4 billion. Median nuclear-verdict severity has climbed in parallel with the count. The 2023 median nuclear verdict ran $44 million. Up from $21 million in 2020. The venue concentration matters. The 2024 top venues by nuclear-verdict dollars: Nevada $8.4 billion, California $6.9 billion, Pennsylvania $3.4 billion, Texas $3.0 billion, New York $2.1 billion. Those five states absorbed the bulk of the year's catastrophic-verdict dollars and are the jurisdictions in which the post-Montgomery plaintiff bar will be filing the first wave of broker negligent-selection cases.
Montgomery did not create that severity curve. The Triple-I and Casualty Actuarial Society 2025 joint analysis attributes approximately $230 billion in cumulative liability-loss costs over the 2014-2023 period to social inflation and legal-system abuse, of which approximately $30 billion is incremental commercial-auto claim cost. Those numbers are PROVISIONAL per R2 deep research because they are aggregations of industry analysis rather than a single primary projection. The directional point stands. The severity environment was already steepening before the slip opinion dropped. Montgomery opened a new class of defendant to it.
The freight-broker financial-responsibility regime Congress built in the Moving Ahead for Progress in the 21st Century Act of 2013 has two layers. The first is the BMC-84 surety bond at $75,000 per broker, administered by the Federal Motor Carrier Safety Administration. The second is the broker errors-and-omissions insurance market, which is private and underwritten by a small number of program-broker specialists. Neither responds to a negligent-selection tort judgment against the broker.
The BMC-84 bond is a financial-responsibility minimum designed to ensure that brokered freight charges and brokered carrier payments do not default on the broker's insolvency. It does not respond to bodily-injury or property-damage claims. The standard broker errors-and-omissions policy responds to "miscommunication, incorrect shipment details, or contract disputes," in the language of policy materials published by Reliance Partners, DAT, PFA Transportation, NFP, and Amwins; bodily injury and property damage are excluded from the policy by industry-standard wording. R2 deep research confirms this exclusion across five independent program-broker sources. The Hanson Bridgett and Faegre Drinker client alerts both flagged the gap in their Thursday-afternoon Montgomery analyses.
The typical mid-market broker carries $1 million to $2 million per-occurrence E&O capacity. The $5 million to $20 million per-occurrence band exists but runs capacity-constrained, growing at a stated 14.9 percent compound annual rate per NAPA Benefits and MoneyGeek 2026 reports, a figure PROVISIONAL per R2 because it is secondary aggregation. The Amwins "Truck Brokers' Contingent Liability" product is one of the few existing structures purpose-built to bridge the bodily-injury exclusion in standard broker E&O, and its existence is the market's own acknowledgment that the gap is real.
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Underwriters now ask one question. Does the gap-bridging product class grow fast enough through the 2026 renewal cycle to absorb the new exposure, or does the broker's balance sheet absorb it as a self-funded retention?
The April 2026 BLS releases were the macro context the slip opinion dropped into. The CPI release dated 2026-05-12 showed all-items CPI up 0.6 percent month over month seasonally adjusted, and up 3.8 percent year over year not seasonally adjusted. The verbatim BLS language: "Over the last 12 months, the all items index increased 3.8 percent before seasonal adjustment." Core CPI excluding food and energy ran +0.4 percent month over month and +2.8 percent year over year. Energy ran +3.8 percent month over month and +17.9 percent year over year. Food ran +0.5 percent month over month and +3.2 percent year over year, with food-at-home (grocery) at +0.7 percent month over month and +2.9 percent year over year. CNN Business characterized the 3.8 percent annual headline print as the highest since May 2023, with energy alone accounting for "over forty percent of the monthly all items increase."
The April 2026 PPI release dated 2026-05-13 reported Final Demand Transportation and Warehousing Services up 5.0 percent month over month. The Bureau of Transportation Statistics's Transportation PPI for April 2026 showed Freight Transportation and Equipment up 2.4 percent year over year. The PPI release went out one business day before the slip opinion.
Kavanaugh's cascade prediction is, in the language of contemporaneous Federal Reserve speeches and the Wall Street Journal's economics coverage, a cost-push inflation prediction with a specific transmission channel. Cost-push inflation passes most readily to the consumer when the demand side is firm and substitution options are limited. The April 2026 macro environment satisfied both conditions. Energy at +17.9 percent year over year and grocery at +2.9 percent year over year describe a household budget already absorbing reflation across the categories most sensitive to truck-delivered cost. The transportation-services PPI at +5.0 percent month over month describes the freight layer specifically running hot before the new cost layer arrived.
Kavanaugh's six sentences are not a prediction about a hypothetical future inflation episode. They are a prediction about a cost transmission channel running in April 2026.
The shipper end of the cascade is concentrated. Walmart fiscal 2025 revenue was $680.99 billion per the Walmart 10-K, with private fleet handling 15 to 20 percent of freight in-house and the balance moving through carriers and brokers. Sysco fiscal 2025 revenue ran $81.37 billion across 337 distribution facilities and approximately 19,000 delivery vehicles, 91 percent of which are owned by Sysco; inbound long-haul to those distribution centers nonetheless touches brokered carrier capacity. US Foods, Amazon, Target, and the major grocery chains run analogous mixes of private fleet, asset-based carrier, and broker-arranged loads.
The freight intermediary layer they procure through is sized. The Armstrong & Associates 2026 Convergence report puts US 3PL gross revenue at $323.4 billion in 2025, with net 3PL revenue at $138 billion. The top 20 brokers account for roughly $53.733 billion of that gross revenue, a figure PROVISIONAL per R2 from FreightCaviar aggregation. The top 5 brokers account for slightly under 50 percent. C.H. Robinson alone moves $23 billion of freight annually across 83,000 customers and 450,000 contract carriers, per Statista on company disclosures, with 2025 quarterly revenue running $4.0 billion, $4.1 billion, third-quarter figure not pulled in this research pass, and $3.9 billion in Q4 for an annualized roughly $16 billion in CHRW revenue per its SEC EDGAR 8-K filings.
The stock-price reaction on decision day was traceable. C.H. Robinson closed at $163.59 per a Citi Research note relayed by Seeking Alpha that characterized the direct financial impact on CHRW as "modest due to its strong financial footing." Citi's read was that smaller brokers would face the squeeze. RXO traded in a same-day intraday range of $16.75 to $20.40, a figure PROVISIONAL per R2 because it aggregates GuruFocus intraday tape rather than NYSE TAQ. Simply Wall St flagged J.B. Hunt Transport Services as a relative beneficiary of the post-Montgomery asset-light versus vertically-integrated split on the theory that J.B. Hunt's intermodal and owned-trucking mix carries lower negligent-selection exposure than the predominantly asset-light CHRW, RXO, and XPO models. Specific same-day reactions for XPO and Hub Group were not surfaced in R2's pass and are not asserted here.
The cascade Kavanaugh predicted runs from the broker's E&O retention through the broker's primary auto-liability tower through the broker's excess-liability tower through the broker's indemnity-bearing master service agreement with the shipper through the shipper's own logistics cost line through the shipper's price to the consumer. The IMA Q4 2025 Property & Casualty Markets in Focus report had already flagged excess-liability fleet exposures running plus 10 to plus 15 percent in renewal, with carriers reducing line sizes and the $1 million to $2 million lead-umbrella layer described as "the tightest." That renewal-cycle pressure predates Montgomery. The Montgomery layer adds to it.
The plaintiff bar moved within hours. Walkup, Melodia, Kelly & Schoenberger, the San Francisco firm representing fatal-collision plaintiffs in California Superior Court, posted "Supreme Court Delivers Good News For Victims Of Negligently Selected Trucking Brokers" on its firm site on Wednesday May 14, decision day. Scolaro Law in New York posted "Unanimous Supreme Court Decision in Montgomery v. Caribe Transport Expands Recovery for Trucking Accident Victims" the same week. McFarlane Law, Collins Law, and Bowman Law in Colorado all posted claim-acquisition materials within five business days. The intake calendar on the plaintiff side is functioning in days, not weeks.
The defense bar's analytical infrastructure ran in parallel. The Matthiesen, Wickert & Lehrer client alert and the Faegre Drinker post identified at least five named theories of liability now open against freight brokers in the wake of Montgomery: negligent hiring or selection of motor carrier (the direct Montgomery theory), negligent supervision of motor carrier during shipment, negligent entrustment where the broker had access to FMCSA Safety Measurement System or Compliance Safety Accountability score data showing pattern violations, common-law aiding-and-abetting under state tort doctrines, and vicarious liability theories where the broker-carrier relationship can be reframed as agency. The standard of care across all five is ordinary negligence, not strict liability. Barrett's opinion explicitly does not impose strict liability. The Faegre Drinker analysis emphasizes that the ordinary-negligence standard preserves factual ground for the defense to litigate, which is true; the defense ground is no longer the pleading stage, and that is the structural change.
The doctrinal arc closes a thirty-two-year loop. The FAAAA was enacted in 1994 to extend the deregulation that began with the Airline Deregulation Act of 1978 and the Motor Carrier Act of 1980. The freight-brokerage industry as a distinct industry emerged after the Motor Carrier Act, when revenue per truckload-ton fell 22 percent in real terms from 1979 to 1986 per the Surface Freight Transportation Deregulation literature surfaced through Econlib. The brokerage layer is itself a deregulation artifact, and the FAAAA preemption shield it accreted over thirty-two years was the doctrinal complement to that deregulation. Justice Barrett's six pages do not unwind the 1980 deregulation. They unwind the broker-specific preemption complement to it.
Five business days after Montgomery, Munich Re and Swiss Re have published no public commentary on the decision. Munich Re is the largest reinsurer in the world by gross premium written, at roughly $52 billion GPW per beinsure.com 2026 rankings, with net premium written at roughly $49 billion. Swiss Re is the second largest at roughly $40 billion GPW and $37 billion NPW. Together the two account for the bulk of US commercial-auto excess-of-loss reinsurance treaty capacity. The 1/1/2027 treaty renewal cycle is seven and a half months out as of this writing.
The absence of public reinsurer commentary at the five-business-day mark is operationally informative. Major reinsurers typically publish same-day or next-day client alerts on adverse-loss-environment court decisions, particularly where the decision opens a new exposure class. The five-day silence supports one of two readings. The first is that Munich Re and Swiss Re are still modeling the exposure, in which case the public-comment window opens at the next quarterly outlook publication, typically late June for AM Best's E&S outlook and roughly mid-quarter for individual reinsurer client communications. The second is that the reinsurers have concluded Montgomery stays within the primary and excess layers of broker and motor-carrier coverage and does not reach excess-of-loss reinsurance treaties. Both readings are informative. Neither is yet confirmed by primary-source reinsurer commentary. R2 deep research explicitly labels the "silence is informative" framing as OBSERVATION rather than citable analysis.
The casualty reinsurance market broadly entered 2026 with what industry-watchers characterized as stable rates, on the read that casualty business benefits from higher reinsurance capital allocation in a year of moderating catastrophe activity. That commentary predates Montgomery. The empirical question is whether the 1/1/2027 renewals price the new exposure into commercial-auto treaty rates and into broker-specific facultative reinsurance. The watch-list signal is the next AM Best E&S quarterly outlook in late June 2026, followed by the September and early-fall reinsurer broker reports from Aon, Howden Tiger, and Guy Carpenter that traditionally set the tone for the 1/1 renewal cycle.
The legislative-fix path is open and unattended five business days after the decision. The Transportation Intermediaries Association, through President and CEO Chris Burroughs, published a same-day statement characterizing the ruling as "deeply disappointing" and arguing it "imposes an impossible task on brokers, effectively asking them to evaluate the safety of a given motor carrier despite having been deemed safe to operate on public roads by the federal government." Burroughs offered the operative analogy: "This is like asking travel agents to evaluate the safety of a given airline despite the fact that the airline has been licensed to fly by the federal government." The National Federation of Independent Business, through VP and NFIB Small Business Legal Center Executive Director Beth Milito, published a same-day statement that read in part: "This decision doesn't just expand freight broker liability, it eliminates all clarity and consistency in motor carrier safety standards for our nation's supply chains. Without a uniform standard, every small business who uses a trucking company will be hit with higher costs and reduced availability as the resulting patchwork of rules and risk ricochets through the supply chain." NFIB had filed an amicus brief on the broker side.
What did not happen in the five business days following the decision is a public statement from House Transportation and Infrastructure Committee Chair Sam Graves, Republican of Missouri, or from Senate Commerce Committee Ranking Member Maria Cantwell, Democrat of Washington. R2 deep research exhausted search across graves.house.gov press releases, the T&I Committee site, Landline Media, Transport Topics, commerce.senate.gov, and the relevant trade press for the 2026-05-14 through 2026-05-19 window without surfacing a Montgomery statement from either member. No FAAAA amendment bill draft has been located. The Daily Caller referenced an industry tort-reform lobbying response framed as "the hidden tax bleeding your wallet dry" but that is opinion-page commentary, not legislative text. R2 labels the legislative absence UNVERIFIED in the sense that the absence itself is asserted only as "not located in this research pass," not as the absolute claim that no such statement exists.
The legislative-gap framing matters because Kavanaugh's concurrence is, structurally, an invitation. He observes that the FAAAA mandates minimum insurance coverage for trucking companies but not for brokers, a structural gap suggesting Congress did not anticipate broker tort exposure in 1994; if Congress had anticipated broker tort exposure, "it presumably would have mandated insurance for them too." That sentence is a roadmap for a FAAAA amendment that would either preempt state-law negligent-selection claims directly or impose a federal minimum-insurance regime for brokers analogous to the FMCSA-mandated minimum for motor carriers. The roadmap sits in a concurrence joined by two Justices. The committees of jurisdiction have not, as of fetch date 2026-05-19, taken it up.
The Kavanaugh concurrence is a cost-cascade prediction published in the United States Reports, into a $72.18 billion industry that has run 58 consecutive quarters of premium increases, against a $31.3 billion nuclear-verdict environment, on a decision day that came four business days after a +3.8 percent CPI print and one business day after a +5.0 percent monthly transportation-services PPI print. The cascade is on the calendar. The next public reinsurance signal is approximately seven weeks out at the AM Best E&S quarterly outlook. The legislative-fix window opens whenever Chairman Graves or Ranking Member Cantwell decides to open it. Justice Barrett wrote the opinion. Justice Kavanaugh wrote the price tag.
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