You are now a member of a military dictatorship, at least if you live and claim citizenship in the U.S. That's because, back in October 2006, the Defense Authorization Act gave the president the power to declare martial law basically whenever he likes. The law states the conditions under which the president may declare martial law, and the last condition on the list is "other conditions". In other words, whenever he feels like it.
An editorial in the New York Times gives you the big picture - commentary from James Bovard from American Conservative and Justin Raimondo from Antiwar.com provides the color commentary on the demise of your democracy. My info comes from the Advocates for Self-Government - the story link is below.
And when you're done being outraged, contact your U.S. Senators and ask them to support Patrick Leahy (D-VT) and Christopher Bond (R-MO) in their efforts to get Senate Bill 513 passed, as well as the House bill H.R. 869.
And make sure your fellow voters in Michigan, Virginia, Massachusetts, and California know that Senators Carl Levin (D-MI), John Warner (R-VA), Ted Kennedy (D-MA), and Duncan Hunter (R-CA) either wrote the provision themselves, or personally endorsed it. These four men are guilty of handing your liberty over to the current sitting president.