The tax provides more than $23 billion per year in revenue for federal highway and public transit programs. The federal gas tax has been in place, in one way or another, since 1919 and was last raised in 1993.
The interchamber tensions between Democrats are becoming a regular feature of funding fights in the second Trump term. Lawmakers, strategists and voters alike exploded in anger last March when Senate Minority Leader Chuck Schumer and a handful of colleagues allowed a spending package to move forward amid the Elon Musk-led DOGE assault on federal agencies. In November, tempers again flared when a handful of Senate Democrats joined with Republicans to end a record 43-day shutdown.