U.S. Senate Republicans passed President Donald Trump's massive tax-and-spending bill on Tuesday by the narrowest of margins, advancing a package that would slash taxes, reduce social safety net programs and boost military and immigration enforcement spending while adding $3.

Party leaders were able to muscle through considerable internal rifts, but the bill’s fate in the House was uncertain.

A bleary-eyed Lisa Murkowski exited the Republican whip’s office early Tuesday morning with a coffee in hand, after more than 24 straight hours of backroom negotiations over President Donald Trump’s sweeping tax and spending bill.