House Democrats are escalating a dispute over party discipline after Reps. Marie Gluesenkamp Perez and Jared Golden again voted with Republicans on a rule vote, a procedural measure needed to bring legislation to the House floor. The vote prompted an apparent confrontation between Gluesenkamp Perez and Rep. Katherine Clark, the No. 2 House Democrat and party whip. Democrats are especially angry because the vote helps advance a Russian sanctions bill championed by President Donald Trump. The White House treated the measure as such a priority that administration officials privately contacted at least one House Democratic centrist, offering support for a community project in exchange for backing the Republican procedural vote; that member declined. With the midterms approaching and the final week of the session underway, Rep. Pete Aguilar said Democrats would discuss possible punishments for the defectors.