Senator John Kerry is one of the forces behind the BUILD Act, which, as he put it in his press release, "would help close America's widening infrastructure funding gap.":
"Democrats and Republicans, business and labor, are now united to create an American infrastructure bank to leverage private investment, make America the world's builders once again, and close the deficit in our infrastructure investments. The BUILD Act will create good jobs, strengthen our competitiveness, and do more with less. Most of all, this bill breaks a partisan stalemate to get America back in the game."
The Infrastructurist explains:
"The plan is pretty straightforward. The federal government would kick-start A.I.F.A. with a $10 billion initial investment, after which the authority would be independent and self-sustaining. Projects can receive up to 50 percent of their financing from the federal money, but the rest (ideally much more than half) will have to come through private investments."