Duffy cited failures by California to enforce English proficiency rules following one of President Donald Trump’s executive orders.

“California is the only state in the nation that refuses to ensure big rig drivers can read our road signs and communicate with law enforcement. This is a fundamental safety issue that impacts you and your family on America’s roads,” Duffy said.

“The Golden State thinks it’s OK to ignore @USDOT English language requirements for truckers. You can play all the games you want, but not at the expense of American lives,” Duffy wrote on X.