"Sen. Richard Blumenthal, who never fought in Vietnam when he said for years he had (major lie)"
Pot meet Kettle.
However on big difference between Blumenthal and Trump.  Blumenthal's words about his meeting with Gorsuch is corroborated.  It's kind of the nice thing about not trying to keep all the information to yourself because that means your words can be verified by indepedent uninterested sources.  But I doubt Trump could understand that as he doesn't understand the value of truth.  Probably because he spent far too long running from it like rarely using emails because they can be used against you in court.