Thomas Massie — the Republican congressman from Kentucky’s Fourth District — is an M.I.T.-trained engineer, inventor, cattle farmer, libertarian, deficit hawk and skeptic of foreign aid and foreign wars. He is also, in the view of President Trump, “a complete and total disaster” who should be removed from office as soon as possible. Their falling-out wasn’t a forgone conclusion. Mr. Massie votes with his party 91 percent of the time. He shares MAGA’s distrust of the administrative state and