"We don't need any grounds. We're the United States" Listen in to this experience, at the border, by two Canadian citizens coming to the US to simply go shopping.

THE United States has been narrowly saved from lethal terrorist plots in recent years — or so it has seemed. A would-be suicide bomber was intercepted on his way to the Capitol; a scheme to bomb synagogues and shoot Stinger missiles at military aircraft was developed by men in Newburgh, N.Y.; and a fanciful idea to fly explosive-laden model planes into the Pentagon and the Capitol was hatched in Massachusetts.

The FBI has put out a series of flyers to let you know how you can spot an insurgent/terrorist/extremist.It’s their handy dandy lists that citizens can refer to in case one needs help deciding whether to report their neighbor who seems to be buying an awful lot of groceries lately.

Sovereign citizens getting put on lists.
Opposing taxation, supporting the gold-standard, and opposing regulations makes you an "extremist" according to the FBI.

"The extremists may refuse to pay taxes, defy government environmental regulations and believe the United States went bankrupt by going off the gold standard."

"Sovereign members often express particular outrage at tax collection, putting Internal Revenue Service employees at risk."

WASHINGTON - Hacker group Anonymous released a recording on Friday of what appears to be a conference call between the FBI and Scotland Yard held last month to discuss operations against the group.
The audio of the nearly 17-minute conference call was posted on YouTube along with an e-mail invitation from a Federal Bureau of Investigation agent setting up the call for January 17.