 Funding for Here and Now comes from MathWorks, creators of MATLAB and Simulink software, accelerating the pace of engineering and science. Learn more at mathworks.com. From NPR and WBUR Boston, I'm Celeste Headlee. I'm Peter O'Dowd. It's Here and Now. Coming up, President Biden is trying to change the subject away from his poor debate performance last week. Instead, he's focusing on the threat to democracy he says former President Trump represents.