Pelosi and Schumer said after their last White House meeting in late April that there was a consensus on one aspect of infrastructure: The agreement would be big and bold. But funding is a different matter. Business and trade groups have been meeting with White House officials to emphasize the importance of shoring up the Highway Trust Fund, which pays for road improvements and transit systems. Federal fuel taxes supply most of the money that goes into the trust fund, but the purchasing power of the gas tax has declined as vehicles have become more fuel efficient.
https://www.norwichbulletin.com/ZZ/news/20190522/trump-dems-debate-what-to-debate-infrastructure-or-trade