Apparently, if they park the RV by the Golden Gate Bridge...
Neither the FBI, Coast Guard, or CHP will snag them.
(Ooooh am I honked about this one)
POPE AT LOURDES: 2700 POLICEMEN TO PROTECT HIM
http://www.agi.it/english/news.pl?doc=200408121605-1108-RT1-CRO-0-NF11&page=0&id=agionline-eng.oggitalia
Recommendations for Bridge and Tunnel Security by the US Highway Department