President Joe Biden has bet his legacy on a sweeping economic agenda that now awaits action in the House of Representatives. But on the eve of a key vote in Congress’s lower chamber, Democratic lawmakers from across the ideological spectrum remain as divided as ever on how to get that agenda over the finish line—or what it should look like when it gets there. The White House’s economic proposals have been sorted into two bills: A $1.2 trillion bipartisan infrastructure bill the Senate passed in August and a $3.5 trillion budget bill that includes massive investments in health care, the fight against climate change, and the social safety net.