Experts say Obama should retake the oath
A do-over “would take him 30 seconds, he can do it in private, it’s not a big deal, and he ought to do it just to be safe,” said Boston University constitutional scholar and Supreme Court watcher Jack Beermann. “It’s an open question whether he’s president until he takes the proper oath.”
Turns out both Calvin Coolidge and Chester Arthur both retook the oath. Update: Obama and Roberts redo the oath in the Map Room of the White House.