On the Fact that the U.S. Constitution Lays Out Three Essential Tasks for the Federal Government; to Protect the Citizens from a) an External Invasion, b) Internal Disturbances (Riots, for Example), and c) the Formation of State Dictatorships......and, so, Yeah, Mr. Trump Was Well Within His Constitutional Authority to Send Federal Agents to Portland and in Fact Could Have Requested Even More Intervention than He Did (Keeping the Mission Mostly Directed at Protecting Federal Property)

It also could be proffered that he even could have gone in there and deposed some of those fascistic governors and mayors who've so shamelessly and moronically crushed the civil liberties of millions of American citizens......though, yeah, maybe we should table that one......for now.