Let the debate begin.
In a dramatic 50-50 vote with Vice President Mike Pence breaking the tie, the Republican-led Senate voted to begin debate on their efforts to repeal and replace Obamacare as over a dozen protesters chanted "Shame! Shame! Shame!" from above.
The vote is a key parliamentary hurdle that sets off days of arguing, hastily drafted amendments, close votes, and angry protests. After seven years of promises to repeal President Barack Obama's signature legislative accomplishment, Republicans have never been closer than they are today.
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