Yup.
But look at what is happening at ICANN and the other low-level hardware connection points on the backbones. It's REALLY not hard to shut things down in a hurry.
Discussion
ICANN headquarters is in California. Same as everything.
Presidential global Internet kill switch is in Florida.
Yes, but ICANN isn't strictly under US control now, which more than a little pisses me off, since we are still one of the few cuntries that still gives lip service to freedom.