It is hard to imagine our leaders approving plans and/or legislation that would suspend the U.S. Constitution under any circumstances, but that is precisely what has occurred. This is not a conspiracy theory, but very real authority that the national government has granted itself under the guise of protecting the country during a declared national emergency.
After 9/11, a series of legislative events took place, most without congressional debate, and nearly all under the people's radar. These include the Homeland Security Act of 2002; the USA PATRIOT Act in its original and renewed forms (which removed due process and allows warrantless searches of and seizures from citizens deemed a threat to "the continuity of government" without probable cause based on the Department of Homeland Security's "Domestic Extremism Lexicon"); the John Warner National Defense Authorization Act (HR 5122); the Department of Homeland Security Appropriations Act for Fiscal Year 2007 (HR 4144); the Military Commissions Act of 2006 (HR 6166, which removed the writ of habeas corpus, allowing permanent imprisonment without benefit of counsel or petition to the court); the REAL ID Act (attached to an emergency appropriations bill); the FISA Amendments Act (which gave telecom companies retroactive immunity for providing access to customers' private phone lines); and National Presidential Security Directive 51 (which dictates that Congress has no authority during national emergencies).
Combined, this legislation is dangerous because it asserts the authority to suspend the U.S. Constitution and transfer all governance (city, county, and state) to the federal government. All that is required to assume this transfer of power is a presidential declaration of a national emergency and martial law.