President Donald Trump warned he may invoke the Insurrection Act to deploy U.S. military forces into Minnesota as violent protests flare around federal immigration enforcement in Minneapolis.
The Insurrection Act allows a president to send military troops onto U.S. soil to restore order during civil unrest. It was first used by President Thomas Jefferson in 1807 to stop an attempt to break off part of the American West and was last invoked by President George H.W. Bush during the 1992 Los Angeles riots.