DC out of control crime ?? He should look at Mobile AL, but we all know facts mean nothing to him.
"The Act (Posse Comitatus Act) does not prevent the Army National Guard or the Air National Guard under state authority from acting in a law enforcement capacity within its home state or in an adjacent state if invited by that state's governor."
Wiki Page on the Posse Comitatus Act
https://en.wikipedia.org/wiki/Posse_Comitatus_Act