The Fourth Amendment only protects you if you aren't inside the "constitution free zone". And as it happens, about two thirds of the US population live within this zone.
The only good news in all of this is that it won't be too long before they've consumed every available resource and will have to cut back on the drugs that are making them act this way.
See: http://www.aclu.org/national-security_technology-and-liberty... and http://yro.slashdot.org/article.pl?sid=08/10/24/197215