No, I'm not the one ignoring precedent. As I mentioned several times -- Kennedy went in WITHOUT invitation; twice in Alabama and once in Mississippi, as did Grant in South Carolina, and Eisenhower in Arkansas.
Yes, but this is the world we live in today:
Since 1967 the Act has been used six times--
exclusively with an invitation from the state-- four times by Johnson and twice by GHW Bush:
Jul 24, 1967 Johnson Detroit, Michigan
Apr 5, 1968 Johnson Washington, D.C.
Apr 7, 1968 Johnson Baltimore, Maryland
Apr 7, 1968 Johnson Chicago, Illinois
Sep 20, 1989 GHW Bush Saint Croix, United States Virgin Islands
May 1, 1992 GHW Bush Los Angeles County, California
The next time the Act was considered was in 2006. Dubya considered intervening in Louisiana's response to Hurricane Katrina -- despite the refusal from Louisiana's governor. But because this was inconsistent with past precedent, politically difficult, and potentially unconstitutional --- Dubya stood down.
A provision of the National Defense Authorization Act for Fiscal Year 2007 amended the Insurrection Act to permit military intervention without state consent, in case of an emergency that hindered the enforcement of laws. Dubya signed this amendment into law, but all fifty state governors issued a joint statement against it, and
the changes were repealed in January 2008.So not only does the precedent from 1967 through its last use in 1992 stand today: Activation of Federal forces under the Insurrection Act requires a request for assistance from the State --- this precedent was strengthen by the repeal of the Amendment removing the need for consent from the state.
If the President ignored all of this it's guranteed any action would immediately be thrown into court and the riots would continue while the injunction worked its way through the appeals process and potentially to the Supreme Court.