Sen. Mike Lee, R-Utah, was disappointed when the U.S. Supreme Court upheld Obamacare. One year later — having thought about the case, gotten some distance from the issue, reviewed the ruling opinion — he’s confident of one thing: Chief Justice John Roberts engaged in “a betrayal of his judicial oath,” one that amounts to “a form of tyranny.” “In this case, I can’t be sure what exactly motivated Chief Justice John Roberts,” Lee said last night during a Charles Koch Institute event on “Freedom, Laws, and the Commerce Clause” at the Kirby Center for Constitutional Studies. “But what we do...