He's getting push back on this from big city mayors-Business Insider

Chicago Mayor Lori Litghtfoot tweeted- Under no circumstances will I allow Donald Trump’s troops to come to Chicago and terrorize our residents.
7:02 PM · Jul 21, 2020

I've no doubt these quasi-nazi tactics are nothing more than trump's bizarre campaign strategy of locking down his brain-dead base while alientating every nearly every other constituency. He seems incapable of doing anything as president that he doesn't judge to be of benefit to himself politically or financially. I wouldn't be surprised to see his "brownshirts" show up at the polls in minority districts to intimidate voters this fall as the RNC is recruiting an inordinate amount of poll watchers in key states, up to 50,000, to ensure "ballot security" for the election- The Guardian
. This could be why the old huckster is disparaging mail-in voting (in the midst of a pandemic for chrissake!), he wants to be able to turn them away physically on November 3.