Conservatives’ demands for controversial policy additions to spending bills are stalling efforts to fund the government by Friday, nudging the country closer to a partial government shutdown and sparking frustration among lawmakers in both parties.

Congressional leaders failed to unveil the long-awaited compromise appropriations bills over the weekend, blowing through a Sunday target date floated last week and, as a result, leaving members wondering about a path forward just days ahead of the looming deadline.

Senate Majority Leader Chuck Schumer (D-N.Y.) said House Republicans were responsible for the holdup, writing in a letter to colleagues Sunday that conservatives in the lower chamber “need more time to sort themselves out.” Speaker Mike Johnson (R-La.), however, dismissed his “counterproductive rhetoric,” saying that new requests from Democrats had delayed the process.