Republicans are gasping at the $2.3 trillion price tag for President Joe Biden’s new infrastructure proposal. Still, it’s not enough for key liberal Democrats who want Congress to go much, much bigger.

House and Senate Democratic leaders are aiming for swift passage of the massive infrastructure proposal, named the American Jobs Plan. It would spend billions on new roads, bridges, waterways, and green energy initiatives to support electric cars and other provisions that would reduce dependence on fossil fuels.