evidence: President Joe Biden claimed in a speech Sept. 14 that he taught political theory at the University of Pennsylvania for four years. [...] Biden appeared at Prince George’s Community College in Maryland Sept. 14 to deliver prepared remarks on the economy and touting his economic record. During the speech, he remarked that he taught classes on political theory while tenured at the University of Pennsylvania. "I taught at the University of Pennsylvania for four years. I used to teach political theory," Biden remarked. "And, folks, you always hear every generation has to fight for democracy. And I find myself – it’s automatic."