Republicans are also adding a hot-button immigration issue to the measure by requiring states to obtain proof of citizenship, such as a birth certificate or passport, when someone registers to vote. Inclusion of the citizenship requirement is a nonstarter in the Senate, complicating prospects for the spending bill's passage.

Lawmakers are returning to Washington next week following a traditional August recess spent mostly in their home states and districts. They are not close to completing work on the dozen annual appropriations bills that will fund the agencies during the next fiscal year, so they'll need to approve a stopgap measure to prevent a shutdown when the new fiscal year begins Oct. 1.

"Today, House Republicans are taking a critically important step to keep the federal government funded and to secure our federal election process," Speaker Mike Johnson said in a statement. "Congress has a responsibility to do both, and we must ensure that only American citizens can decide American elections."

But in a joint statement, Senate Majority Leader Chuck Schumer and Appropriations Committee Chair Patty Murray said avoiding a shutdown requires bipartisanship, not a bill drawn up by one party.

"If Speaker Johnson drives House Republicans down this highly partisan path, the odds of a shutdown go way up, and Americans will know that the responsibility of a shutdown will be on the House Republicans' hands," Schumer and Murray said.

Johnson's decision to add the proof of citizenship requirement to the spending measure comes after the House Freedom Caucus called for it in a position statement last month. The group of conservatives, banking on a win by Republican nominee Donald Trump, also urged that the measure fund the government into early next year so Republicans could get more of their priorities in legislation.

Some Republican leaders had wanted to pass the final spending bills by the end of this Congress so that the new president, whether it be Trump or Democratic nominee Kamala Harris, could focus more on getting staffed and pursuing their own top priorities rather than dealing with spending disagreements.

Republicans say requiring proof of citizenship would ensure American elections are only for American citizens, improving confidence in the nation's federal election system. But opponents say the available evidence shows that noncitizen voting in federal elections is incredibly rare and such a requirement would disenfranchise millions of Americans who don't have the necessary documents readily available when they get a chance to register.

What remains to be seen is what happens if the bill passes the House this week and the Senate declines to take it up or votes it down.

The bill would fund agencies at current levels until March 28, though there's also money to help cover additional security costs associated with Inauguration Day and $10 billion for the Federal Emergency Management Agency's disaster relief fund.