It works ...

Me and my buddies used to crash wedding receptions when we were young and broke and wanted to party. When one of them worried we might get busted I always told him "act like you own the place and nobody will ask questions." It works:

The Secret Service maintains that President Barack Obama was never in danger at a state dinner after an uninvited Virginia couple got through security, but it wouldn't comment on whether anyone is screened for radiological or biological weapons.

...

Gonna be some Secret Service agents looking for jobs this moring.