https://en.wikipedia.org/wiki/Insurrection_Act
On September 30, 2006, the Congress modified the Insurrection Act as part of the 2007 Defense Authorization Bill (repealed as of 2008). Section 1076 of the law changed Sec. 333 of the “Insurrection Act,” and widened the President’s ability to deploy troops within the United States to enforce the laws. Under this act, the President may also deploy troops as a police force during a natural disaster, epidemic, serious public health emergency, terrorist attack, or other condition, when the President determines that the authorities of the state are incapable of maintaining public order. The bill also modified Sec. 334 of the Insurrection Act, giving the President authority to order the dispersal of either insurgents or “those obstructing the enforcement of the laws.” The law changed the name of the chapter from “Insurrection” to “Enforcement of the Laws to Restore Public Order.”
Thanks for that.
Good to know that the Insurrection Act includes epidemics.