Republican lawmakers were hammering out a deal Wednesday to avert a weekend government shutdown, putting off for another month a contentious debate on immigration, but also setting aside a long-sought disaster aid package for the victims of Hurricane Harvey and other natural disasters.As Texas officials feared, an $81 billion storm relief bill passed by the House in December continues to languish amid congressional brinkmanship over a wider budget agreement, with Republicans insisting on funding President Donald Trump's border wall and Democrats holding out for a deal to protect young immigrants from deportation.