At the moment, while the Posse Comitatus Act is still in effect, does it offer good protection?
No. Posse Comitatus was substantially weakened by amendments in 1981 and 1991 that gave the Defense Department a role in the enforcement of drug laws. Since then, many American cities have acquired joint task forces composed of military and local police (who can be temporarily deputized as federal officers). A drug dealer, or an innocent person, may have his door broken down–legally–and his home entered by soldiers and police with guns drawn. 5. Q: What does the Constitution of the U.S. say about martial law? A: The term ‘martial law’ never appears in the Constitution. However, the idea of it is conveyed in two sections of Article I as follows: Section 8 says The Congress shall have the Power . . . (15) To provide for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions. Section 9 (2) says The Privilege of the Writ of Habeas Corpus shall not be suspended, unless when in cases of Rebellion or Invasion the public Safety will require it.
