But the White House and Senate Republicans have said they will immediately cast the bill aside, leaving uncertain what steps policymakers might take as the economy continues to face severe strains.

The sweeping legislation, dubbed the “Heroes Act,” also faces opposition within the House Democratic caucus, with some moderate lawmakers objecting to voting on a bill that they all know will not become law. Some liberals, meanwhile, have complained that the package does not go far enough to aid the public in the midst of an unprecedented economic meltdown.