Not smart enough?

Despite the calendar, tax season is not over.

Bernie Sanders has released his returns. Much to his embarrassment and the embarrassment of some of his supporters, he is a millionaire. He has spent much of his career railing against millionaires.

President Donald Trump, on the other hand, steadfastly refuses to release his tax returns. An official request from Representative Richard Neal, chairman of the Ways and Means Committee, has been blunted, and the Internal Revenue Service so far has been holding fast against releasing them. Neal wants six years of returns, but Treasury Secretary Steven M...