Former President Donald Trump, who is currently running for the presidency again, recently proposed a cognitive test for President Joe Biden. However, Trump ended up misnaming his own doctor in the process. What Happened: Trump, during a campaign event in Detroit on Saturday, questioned Biden’s mental acuity and suggested that the latter should take a cognitive test. In a twist of irony, Trump misnamed his own doctor, referring to Rep. Ronny Jackson, who served as the White House physician during part of Trump’s presidency, as “Ronny Johnson,” reported the Associated Press. “He doesn’t even kn…