WASHINGTON - US Senate Republicans narrowly agreed on Tuesday to open debate on a bill to end Obamacare, but the party's seven-year effort to roll back Democratic President Barack Obama's signature healthcare law still faces significant hurdles.
The Senate deadlocked 50-50 on moving forward with the healthcare debate, forcing Vice President Mike Pence to cast the tie-breaking vote.
Senator John McCain, who was diagnosed this month with brain cancer and has been recovering from surgery at home in Arizona, made a dramatic return to the US Capitol to cast a crucial vote in favor of proceeding.
The outcome was a huge relief for President Donald Trump, who had pushed his fellow Republicans hard in recent days to live up to the party's campaign promises to repeal the 2010 Affordable Care Act, commonly known as Obamacare. Minutes after the vote, Trump called it "a big step."
But the narrow victory on a simple procedural matter raised questions about whether Republicans can muster the votes necessary to pass any of the various approaches to repeal.