“If you thought the “Transportation Security Administration” would limit itself to conducting unconstitutional searches at airports, think again.  The agency intends to assert jurisdiction over our nation’s highways, waterways, and railroads as well.  TSA launched a new campaign of random checkpoints on Tennessee highways last week, complete with a sinister military-style acronym--VIP(E)R—as a name for the program…” 
http://tennesseenewspress.com/2011/10/24/tsa-releases-vipr-venom-on-tennessee-highways-by-ron-paul/