The day before Thanksgiving in New York, I bumped into a Trump adviser who actually knows what is going on inside Trump Tower, as opposed to rumors inhabiting the media such as this Tuesday headline: “Trump’s Team Frays Over Romney.” The message I got was different: “It’s going to be fine. It’s going to be just fine.”

In the seven days since Thanksgiving, President-elect Trump has named the respected schools reformer Betsy DeVos from Michigan as Secretary of Education. Rep. Tom Price of Georgia, the chairman of the House...