This Fourth of July weekend, as Americans celebrate liberation from an overreaching state, police in Pennsylvania and California are expanding checkpoints and roving patrols that stop drivers without individual suspicion — and the feds are picking up the tab.
Pennsylvania State Police and local departments will run DUI checkpoints and roving patrols through the holiday as part of the state's Fourth of July Impaired Driving Campaign, according to the Mechanicsburg Patriot News. The effort is funded through PennDOT's distribution of more than $6.7 million from the National Highway Traffic Safety Administration — federal dollars flowing to state checkpoints on the weekend the country marks its break from arbitrary government power.
In California, the Highway Patrol is launching a 78-hour enforcement blitz running Thursday evening through Sunday night, the New York Post reported. CHP will deploy officers in specially marked low-profile vehicles designed to "blend into traffic, allowing officers to identify reckless drivers before taking enforcement action." Those stealth vehicles have already produced more than 59,000 citations statewide.
Both states lean on crash data to justify the sweeps. Pennsylvania recorded 52 alcohol-related crashes and 11 drug-related crashes during the July 4-5 period last year, resulting in two fatalities and 36 injuries, the Patriot News reported. Across the full summer of 2025, impaired driving caused 2,190 crashes and 85 deaths in the state. In California, last year's holiday enforcement period saw more than 850 speed-related crashes with at least seven deaths and nearly 400 injuries, plus over 1,300 DUI arrests, according to the Post.
The Patriot News framed the enforcement as straightforward public safety, noting the state is hosting millions of visitors for events including the FIFA World Cup 26 and America250PA. The Post, by contrast, led with the angle that the enforcement could "ruin your Fourth of July" — but buried the constitutional implications beneath a list of CHP safe-driving tips.
Neither outlet raised the core tension: DUI checkpoints allow police to stop drivers who have done nothing wrong, absent any individualized suspicion — the kind of arbitrary state power the Fourth Amendment was written to prevent. The Supreme Court upheld checkpoints in a 1990 split decision, reasoning that the government interest in road safety outweighed the minimal intrusion. Whether that trade-off still holds when federal money incentivizes the stops is a question neither state appears eager to ask.
AAA projects 72.2 million Americans will travel at least 50 miles this holiday period. The Pennsylvania Turnpike alone expects more than 58 million travelers this summer. That's a lot of citizens moving through a lot of checkpoints — on the anniversary of a revolution fought over the right to be left alone.
The founders didn't break from one tyranny to build another. But they also didn't have 85 fellow citizens dying in a single summer from impaired driving. Reconciling those two facts — liberty and safety, the warrant requirement and the checkpoint — is the open question no enforcement press release bothers to answer.
