President Trump, spurred on by conservatives who want him to slash safety net programs, unveiled on Thursday a plan to overhaul the federal government that could have a profound effect on millions of poor and working-class Americans.

The House, in a striking display of Republican division, rejected a massive farm bill on Friday that would have imposed strict new work requirements on beneficiaries of federal food aid while continuing farm subsidies popular with rural voters. The twice-a-decade farm policy measure failed on a 213-to-198 vote, after a key bloc of conservatives rebuked Speaker Paul D. Ryan over his refusal to schedule an immediate vote on a restrictive immigration bill sponsored by the House Judiciary Committee chairman, Robert W. Goodlatte of Virginia.