The martial law concept in the United States is closely tied with the right of habeas corpus, which is in essence the right to a hearing on lawful imprisonment, or more broadly, the supervision of law enforcement by the judiciary. The ability to suspend habeas corpus is often equated with martial law. Article 1, Section 9 of the US Constitution states:
“The Privilege of the Writ of Habeas Corpus shall not be suspended, unless when in Cases of Rebellion or Invasion the public Safety may require it.”
In United States law, martial law is limited by several court decisions that were handed down between the American Civil War and World War II. In 1878, Congress passed the Posse Comitatus Act, which forbids military involvement in domestic law enforcement without congressional approval.
At least two American lawmakers have stated on the record that, in their opinion, Section 1031 of the National Defense Authorization Act for Fiscal Year 2012 legalizes or authorizes martial law in the United States. Senator Mark Udall stated, “These provisions raise serious questions as to who we are as a society and what our Constitution seeks to protect…Section 1031 essentially repeals the Posse Comitatus Act of 1878 by authorizing the U.S. military to perform law enforcement functions on American soil.”
What would happen if Obama tried to stay in power by declaring martial law?