Trump calls Paul Krugman 'demented' for suggesting he has an 'incentive' to benefit from a 9/11-style attack

Trump added. Although he didn't refer to the columnist by name, Trump appeared to have been directing his remarks at the columnist Paul Krugman, who was widely criticized for tweeting his speculation Friday. "Thought: There was (rightly) a cloud of ...

Paul Krugman calls Trump 'obviously mentally ill the moment he took office' in bizarre tweet

"Thanks, Comey," he added, referring to FBI Director James Comey. Krugman has criticized Trump repeatedly since his election — questioning Trump's business conflicts of interest, his Cabinet nominees, the involvement of Russia in his election, and more.