It is ALWAYS wise to doubt any assertion made by a progressive, no matter how credentialed:
Jonah Goldberg quotes Robert Reich: “Bill Clinton never mentioned the words `health care reform’ after the 1994 midterms.” Reich’s claim is false — wildly false. A check of the database at the American Presidency Project shows that President Clinton used the phrase on 116 occasions after the midterm.
What’s remarkable is how being shown to be factually incorrect seldom slows them down in the least.