Detroit is dead and al-Qaeda is alive.
A group of conservative senators, most prominently including Ted Cruz, hopes to defund Obamacare by forcing a government-shutdown fight over a so-called continuing resolution this fall. They always explain (accurately enough) the imperative of defunding Obamacare, but never get around to explaining how their tactic would actually accomplish it. The public would have to blame President Obama and Democrats for any shutdown so overwhelmingly that they would buckle and abandon their most cherished legislative achievement. This is unlikely to happen, especially since some Republicans are already on record saying that they themselves are the ones who want to force the shutdown. We look forward to the day that Obamacare is defunded (and entirely repealed, for that matter), but a shutdown confrontation is not a magic bullet, or even a plausible weapon.