U.S. Department of Transportation
The U.S. Department of Transportation is the federal department responsible for overseeing the nation's transportation infrastructure, including aviation, highways, railroads, and pipelines. It enforces transportation safety regulations and administers federal grants for transportation projects. It came under scrutiny in 2025 following aviation safety incidents and reductions in FAA staffing and air traffic controller programs.
Also known as DOT
2026 Events (7)
DHS and DOT's 'Operation Highway Shield' detained 51 immigrant truckers, arrested 86 drivers across 4 Midwest states
DHS and the U.S. Department of Transportation ran "Operation Highway Shield," a three-day joint immigration and trucking-enforcement sweep from July 28-30, 2026, across Illinois, Indiana, Iowa, and Ohio. Federal agents detained 51 immigrants, including 21 holding non-domiciled commercial driver's licenses, placed 766 drivers and vehicles out of service, arrested 86 operators, and cited 36 drivers for failing English-language-proficiency tests. DHS Secretary Markwayne Mullin and Transportation Secretary Sean Duffy said the operation targeted "illegal aliens" and non-English-proficient truckers, the second wave of a program that began in Florida in March 2026.
FMCSA demanded Social Security numbers and other private data on 17 million commercial drivers from state-run database
The Federal Motor Carrier Safety Administration demanded on July 23, 2026 that the American Association of Motor Vehicle Administrators turn over the entire Commercial Driver's License Information System — names, dates of birth, and Social Security numbers for roughly 17 million commercial drivers — threatening to cut federal funding for the state-owned database if AAMVA refused. The Department of Homeland Security issued its own subpoena for the same records on August 11, and on August 13 a coalition of states sued in the Eastern District of Virginia, arguing the demands violate federal privacy law and that FMCSA's stated licensing rationale masks an intent to share the data with DHS for immigration enforcement.
Federal agencies admitted using keyword filters to cancel nearly $2 billion in University of California research grants
In July 2026, federal agencies admitted in signed court stipulations that they terminated more than a thousand University of California research grants based on keyword searches for politically disfavored terms—including "health equity," "structural racism," and "vaccine hesitancy"—rather than merit-based review. The National Institutes of Health alone suspended or cancelled more than 1,000 UC grants flagged by an internal search tool, and the Department of Transportation terminated six grants worth $42 million for referencing terms like "transportation equity." Lawyers for the UC researchers cited the admissions as proof of First Amendment violations and moved for summary judgment against the Trump administration in federal court.
DOT directed FHWA staff to strip bike lane safety data from federal websites
On July 9, 2026, Federal Highway Administration staff received an internal email directing them to remove bike lane references and related safety materials from FHWA websites, following Transportation Secretary Sean Duffy's July 7 public statement branding Biden-era bike lane funding as "DEI." The directive led to the removal of bike lanes and speed cameras from FHWA's "Proven Safety Countermeasures" list and the takedown of the Pedestrian and Bicycle Crash Analysis Tool (PBCAT), eliminating resources used by safety engineers to reduce crash fatalities on U.S. roads.
U.S. Department of Transportation rescinds disparate-impact civil rights enforcement standard
On June 10, 2026, the U.S. Department of Transportation rescinded its disparate impact enforcement standard under Title VI of the Civil Rights Act. The standard had required recipients of federal transportation funding — states, cities, transit agencies — to avoid policies producing discriminatory effects on minority communities even without discriminatory intent. The rescission makes intentional discrimination the only enforceable basis for civil rights complaints at DOT, effectively removing federal scrutiny of transportation policies that disproportionately harm communities of color.
Transportation Secretary Duffy appeared in a reality series funded by DOT-regulated companies
Transportation Secretary Sean Duffy, his wife Rachel Campos-Duffy, and their nine children are the on-camera centerpiece of a five-part reality series, "The Great American Road Trip," produced at no personal cost to the family by a nonprofit, The Great American Road Trip Inc. The nonprofit's sponsors are dominated by companies the Department of Transportation regulates — including Boeing, Toyota, United Airlines, Shell, and Royal Caribbean — and a pitch deck reported by Politico offered higher-paying sponsors on-screen logo placement and speaking roles. The watchdog group CREW asked the DOT Inspector General to investigate possible gift- and travel-rule violations, and Senate Democrats pressed Duffy on the arrangement at a May 19, 2026 Appropriations subcommittee hearing.
FMCSA withheld $160 million in highway funds from California over delayed revocation of 17,000 commercial licenses
The Federal Motor Carrier Safety Administration announced on January 7, 2026 that it was withholding $160 million in federal highway funds from California after the state delayed, until March, the revocation of roughly 17,000 commercial driver's licenses a federal audit found were unlawfully issued to non-domiciled and visa-expired holders. Transportation Secretary Sean Duffy tied the penalty to Governor Gavin Newsom "putting the needs of illegal immigrants over the safety of the American people," while FMCSA Administrator Derek Barrs said the agency would not accept a plan leaving noncompliant drivers behind the wheel of commercial trucks. California's DMV disputed that the withholding served public safety, saying it had cooperated with FMCSA on the review.
2025 Events (1)
Trump White House directed five agencies to condition Colorado funding on political alignment, then cut hundreds of millions
On December 15, 2025, a Trump White House deputy assistant emailed officials at the Departments of Energy, Transportation, Interior, and Agriculture and the Office of Management and Budget, directing them to identify actions "with respect to Colorado" to keep "grants and federal support...in line with administration priorities," hours before President Trump publicly called Colorado Gov. Jared Polis "weak and pathetic" over the imprisonment of former county clerk Tina Peters. In the days that followed, the Department of Energy canceled $615 million in Colorado funding, the Department of Transportation ended $109 million in grants, the Office of Management and Budget moved to close the National Center for Atmospheric Research in Boulder, and the Department of Agriculture ordered an accelerated food-assistance recertification review. The email became public on August 11, 2026 at a federal court hearing in Colorado's retaliation lawsuit against the administration, where a judge called it "extraordinary" and ordered the White House to produce more records, while the administration denied the actions were tied to Peters.