Senate Majority Leader Harry Reid of Nev. stands next to a sign stating the number of days since the Senate passed immigration reform legislation, Thursday, Nov. 20, 2014, during a news conference on Capitol Hill in Washington. President Barack Obama is poised to claim broad authority to grant work permits to millions of immigrants living illegally in the US and to protect them from deportation. But Republicans are vowing an all-out fight against it. “Congress will act,” Senate Minority Leader Mitch McConnell warned on the Senate floor Thursday, hours before Obama’s address.