(THE HILL) — ObamaCare is at the center of a rapidly escalating fight that threatens to shut the government down this fall.

Senate Republicans, including two members of the leadership, are coalescing around a proposal to block any government funding resolution that includes money for the implementation of the 2010 Affordable Care Act.

But such a move is a nonstarter for President Obama and congressional Democrats. Republicans have tried this maneuver in Obama’s first term, only to back off later to the chagrin of Tea Party leaders.

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