30NM Presidential TFR's are standard in the U.S. and there is little consideration to the impact on non-CAT operations whilst in effect. I've experienced a number of them as well as similar for the VP (a smaller radius restriction if I recall). It would seem the perceived threat is as high at home as it is abroad. I would've imagined going for a drive with Prince Philip in the Range Rover would have warranted a safety risk-assessment based on the credentials of Obama's usual drivers
