They’re expanding to Amtrak — and this time, their doofuses will be armed.

“Our mandate is to provide security and counterterrorism operations for all high-risk transportation targets, not just airports and aviation,” said John S. Pistole, the administrator of the agency. “The VIPR teams are a big part of that.”

Some in Congress, however, say the T.S.A. has not demonstrated that the teams are effective. Auditors at the Department of Homeland Security are asking questions about whether the teams are properly trained and deployed based on actual security threats.

Civil liberties groups say that the VIPR teams have little to do with the agency’s original mission to provide security screenings at airports and that in some cases their actions amount to warrantless searches in violation of constitutional protections.

“The problem with T.S.A. stopping and searching people in public places outside the airport is that there are no real legal standards, or probable cause,” said Khaliah Barnes, administrative law counsel at the Electronic Privacy Information Center in Washington. “It’s something that is easily abused because the reason that they are conducting the stops is shrouded in secrecy.”

T.S.A. officials respond that the random searches are “special needs” or “administrative searches” that are exempt from probable cause because they further the government’s need to prevent terrorist attacks.

Emphasis added. So, the TSA can search when and where they deem necessary, and the Boarder Patrol can search you without probable cause as long as you’re within 100 miles of the border. Oh, and in case you missed it, it turns out the NSA dragnet data is used by the DEA, too.

T.S.A. officials would not say if the VIPR teams had ever foiled a terrorist plot or thwarted any major threat to public safety, saying the information is classified. But they argue that the random searches and presence of armed officers serve as a deterrent that bolsters the public confidence.

Really? No, what I see is a bunch of tinpot jackasses jumping at every opportunity to parade around playing soldier.

So long, Fourth Amendment!