Biden said during his first solo press conference on Thursday that he will announce the $3 trillion proposal on Friday in Pittsburgh.
The next day, his Transportation head said a mileage tax could be one way to help pay for the plan.
“I think that shows a lot of promise,” Buttigieg said. “If we believe in that so-called user-pays principle, the idea that part of how we pay for roads is you pay based on how much you drive.”
“The gas tax used to be the obvious way to do it; it’s not anymore,” he continued. “So, a so-called vehicle miles traveled tax or a mileage tax, whatever you want to call it, could be the way to do it.”