Some Republicans are threatening to vote against government funding under a tentative deal between Democrat and GOP leadership, citing lack of border security.
Despite opposition from the right flank of the House GOP, the Ukraine funding measure is a shoo-in for passage when it goes up for a vote later tonight.
GOP hardliners and pragmatists favor a short-term continuing resolution with 8 percent spending cuts, prompting opposition from some ultra-conservatives.
A package of three appropriations bills cleared a procedural hurdle in the Senate on Tuesday as the possibility of a government shutdown loomed on the horizon.