Locked in a deepening struggle with President Barack Obama, the Republican-controlled House approved legislation early Sunday imposing a one-year delay in key parts of the nation's health care law and repealing a tax on medical devices as the price for avoiding a partial government shutdown in a few days' time. Even before the House voted, Senate Democrats pledged to reject the measure and the White House issued a statement vowing a veto in any event. Republicans are pursuing "a narrow ideological agenda ... and pushing the government towards shutdown," it said.