Obvious issues aside:

Mr. Miller did not use the term again once the CNN interview resumed. After Mr. Sanchez repeated his question, Mr. Miller asserted that “the president has the authority anytime he believes federal resources are insufficient to federalize the National Guard to carry out a mission necessary for public safety.”

That circular logic means a president can always deploy the guard at anytime within the US.

Because there are laws preventing the use of actual arm, a president can claim they have no other options, so the guard is authorized.

It’s the same answer, just a little more complicated so people don’t understand.