There is simply no excuse for United States Supreme Court Chief Justice John Roberts bungling the presidential oath of office to such an extent that Barack Obama might need to do it again, at least in private, to ensure the legality of his inauguration.
Roberts should be impeached and removed from office for this unforgivable error. The Constitution requires certain language for a presidential oath of office. Roberts blew it. And if he doesn’t understand such things he should be fired for misfeasance of the first order. It’s his only official duty according to the Constitution and he completely screwed it up.