Per the Wikipedia:
In 2016, Public Law 114-328 was amended … . §252: "Use of militia and armed forces to enforce Federal authority" currently reads:
Whenever the President considers that unlawful obstructions, combinations, or assemblages, or rebellion against the authority of the United States, make it impracticable to enforce the laws of the United States in any State by the ordinary course of judicial proceedings, he may call into Federal service such of the militia of any State, and use such of the armed forces, as he considers necessary to enforce those laws or to suppress the rebellion.[9][6]
[…]
On June 1, 2020, President Donald Trump warned that he would invoke the Act in response to the violent demonstrations following the death of George Floyd.[13][14][15] In his official June 1 statement, President Trump urged "every governor to deploy the National Guard in sufficient numbers" to re-establish civil law and order "until the violence has been quelled"; however, military forces were never deployed.[16]
Also:
Section 1076 is titled "Use of the Armed Forces in major public emergencies". It provided that:
The President may employ the armed forces ... to ... restore public order and enforce the laws of the United States when, as a result of a natural disaster, epidemic, or other serious public health emergency, terrorist attack or incident, or other condition ... the President determines that ... domestic violence has occurred to such an extent that the constituted authorities of the State or possession are incapable of maintaining public order ... or [to] suppress, in a State, any insurrection, domestic violence, unlawful combination, or conspiracy if such ... a condition ... so hinders the execution of the laws ... that any part or class of its people is deprived of a right, privilege, immunity, or protection named in the Constitution and secured by law ... or opposes or obstructs the execution of the laws of the United States or impedes the course of justice under those laws.[12]
In 2008, these changes in the Insurrection Act of 1807 were repealed in their entirety, reverting to the previous wording of the Insurrection Act.[13] It was originally written to limit presidential power as much as possible in the event of insurrection, rebellion, or lawlessness. [emphasis added]
Pay particular attention to that last sentence.