The Republican-led House on Saturday rejected a Senate Democratic bill to raise the nation’s debt limit just three days before the deadline to avert a first-ever default on US financial obligations. President Barack Obama and lawmakers remained at an impasse on any possible compromise. With tensions high at a rare weekend session, the legislation failed on a 246-173 House vote that was largely symbolic. The Senate has yet to vote on the bill. Saturday’s result, however, could pave the way for negotiations on a compromise with Tuesday’s deadline on the government’s ability to pay its bills fast approaching. Shortly after the House vote, President Barack Obama stepped back into the debt-ceiling talks, calling Congress’ top two Democrats, Senate Majority Leader Harry Reid and House Minority Leader Nancy Pelosi, to the White House . . . .