http://www.secretservice.gov/history.shtml
The ACLU has been attacking this one. Gives them a great deal of power.
If so, we might as well call winners of federal popularity contests, their spouses, as well as their offspring, the nobility and just get it over with already.
Of course the usual suspect that originally instituted this power grab, Bill Clinton, boy king to some, or sink emperor to those who are coherent enough. But a play attended by a spouse/children of an elected official is a far cry for this:
http://www.fas.org/sgp/crs/natsec/RS22754.pdf
Too much power, too broad an authority. Breeds arrogance which breeds stupidity.
Still, if they come to take my phone I will not give it up and will depose witnesses with a defense on the grounds that will include a claim that Obama is not a legal President due such special protection. That SHOULD give such a directly and specifically harmed person standing.