After their election loss, notice how quickly Democrats have flip-flopped with respect to their push to abolish the legislative filibuster.

I think Trump, like any president, does deserve Cabinet heads who are loyal to him — so long as they are loyal to the Constitution first.

Michael Greve is a professor at George Mason University’s Antonin Scalia Law School. The trouble with two recent rulings. The European Union’s summit last week has produced a rough agreement ...