proposal, republicans are unified in their opposition to the plan. >> what our colleagues are proposing and planning is absolutely jaw-dropping. >> reporter: and there's no margin for error due to the barest of congressional majorities, and already concerns from key moderates about the price tag. west virginia senator joe manchin says he has serious concerns about that $3.5 trillion top-line number, all as house speaker nancy pelosi has maintained the bipartisan bill will go nowhere in the house until that second measure is ready to move. >> whatever you can achieve in a bipartisan way, bravo. we salute it, we applaud it, we hope that it will pass soon. but, at the same time, we're not going forward with leaving people behind. >> reporter: for now, biden making clear today he fully intends to sign his entire agenda into law. >> we brought this economy back from a cold start. and there is going to be --