With just a week left to avert a government shutdown, new House Speaker Mike Johnson is facing his first big test as he tries to win House Republican support for a short-term funding plan — a task that looks increasingly difficult amid stubborn divisions in the party over federal spending.

Federal agencies are making plans for a shutdown that would shutter government services and halt paychecks for millions of federal workers and military troops.

It’s a disruption that Johnson — just two weeks into his job running the House — has said he wants to avoid. Yet House lawmakers left Washington for the weekend without a plan in hand after several setbacks. Johnson is still sounding out support among Republicans about what to do and is expected to unveil funding legislation over the weekend, according to Republicans granted anonymity to discuss internal deliberations.