While I support efforts to defund Obamacare, the political reality is that goal is not currently achievable. Senator Harry Reid would never let it pass the Senate, and President Obama would never sign it into law.
If we shut down the government, as some advocate, Obamacare remains in full force. Most of Obamacare is in the law as mandatory spending, which continues during a shutdown. What would not continue would be pay for our brave soldiers, treatment for our veterans, and funding for critical services for our seniors. Voting for this sort of collateral damage is irresponsible and a misguided effort to fight Obamacare.