Trump should invoke the Insurrection Act and by the end, he might just do this. The Insurrection Act of 1807 is a United States federal law (10 U.S.C. §§ 251–255; prior to 2016, 10 U.S.C. §§ 331–335; amended 2006, 2007) that empowers the President of the United States to deploy U.S. military and federalized National Guard troops within the United States in particular circumstances, such as to suppress civil disorder, insurrection and rebellion. Specifically his ground can be found under this provision:
— to address an insurrection, domestic violence, unlawful combination or conspiracy, in any state, which results in the deprivation of Constitutionally-secured rights, and where the state is unable, fails, or refuses to protect said rights (§ 253).