Guide to Declarations of Martial Law in the United States (brennancenter.org)

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Martial Law in the United States: Its Meaning, Its History, and Why the President Can’t Declare It (brennancenter.org) The concept has never been well understood. What should be clear, however, is that the president lacks the authority to declare it.

The Brennen Center for Justice made a downloadable spreadsheet containing information about martial law events in the United States. It is part of a larger analysis of martial law.

Martial law has been declared at least 68 times in the United States. This guide explains when, where, and why.

Contiguous United States (Wikipedia) The contiguous United States (officially the conterminous United States) consists of the 48 adjoining U.S. states and the District of Columbia of the United States of America in central North America. The term excludes the only two non-contiguous states, which are Alaska and Hawaii (they are also the last two states to be admitted to the Union), and all other offshore insular areas, such as the U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands. The colloquial term “Lower 48” is also used, especially in relation to Alaska.