Brian Schwalb, D.C. Attorney General, has filed a lawsuit to prevent the federal takeover of the police department.

Welcome to the first weekend of President Donald Trump’s crackdown on Washington, D.C., which, serious as it has been, is just a prelude — and things could quickly get much more intense.

“Ohio’s National Guard exists to protect and serve Ohioans and other Americans in moments of true crisis. When disasters like floods, storms, or community emergencies happen here at home, they’re the...