Johnson, a Republican from north Louisiana, is pushing a single bill using a parliamentary maneuver called “budget reconciliation,” challenging the two-bill strategy pursued by a pair of Senate Republicans, Majority Leader John Thune of South Dakota, and Sen. Lindsey Graham of South Carolina.

Donald Trump and his GOP allies in Congress have recently shared some of the first details of their ambitious agenda — sweeping tax cuts, border security and raising the debt limit — which they hope to muscle through in the first 100 days of the president-elect’s term.