Calling it “unserious and unacceptable,” House Democratic leader Hakeem Jeffries rejected on Monday a proposal from Speaker Mike Johnson that links continued government funding for six months with a measure to require proof of citizenship when registering to vote.

The response frames the spending battle to come over the next weeks as lawmakers work to reach consensus on a short-term spending bill that would prevent a partial government shutdown when the new fiscal year begins Oct. 1. Lawmakers hope to avoid a shutdown just weeks before voters go to the polls.

Johnson is punting the final decisions on full-year spending into next year when a new president and Congress take over. He’s doing so at the urging of members within his conference who believe that Republicans will be in a better position next year to secure the funding and policy priorities they want.