WASHINGTON – Top congressional lawmakers struck a late-night agreement on the last major obstacle to a COVID-19 economic relief package costing nearly $1 trillion, clearing the way for votes as early as Sunday.A Democratic aide said in an email that an agreement had been reached late Saturday and that compromise language was being finalized to seal a deal to be unveiled on Sunday.The breakthrough involved a fight over Federal Reserve emergency powers that was defused by an odd couple: the Senate’s top Democrat and a senior conservative Republican.“We’re getting very close, very close," Minority Leader Chuck Schumer, D-N.Y., said earlier Saturday as he spent much of the day going back and forth with GOP Sen.