The government shutdown is not driven by a Republican desire to overturn the Affordable Care Act (ACA). Nor is it about trying to reign in government spending or limit the national debt. It is, at its core, the latest act in an effort by the far right of the Republican Party to delegitimize the presidency of Barack Obama.
Recent Republican actions have made it clear that too many in that party are unwilling to accept defeat and plan for the next fight. The Republican Party is like that annoying kid many of us knew growing up who would threaten to take his ball and bat home if he does not get to pitch and bat cleanup. For Republicans this is now a guiding principle of policy making not just the petulant and destructive behavior of a spoiled child.