 Carjackings are down in D.C. We'll tell you what the data shows. I'm Shana Stulen. Free tuition for most medical students at Johns Hopkins thanks to a Bloomberg grant. I'm Dick Uliano. Reporters grill White House Press Secretary Karine Jean-Pierre over reports a neurologist has frequently visited the White House lately. 9 o'clock. This is CBS News on the Hour, sponsored by O'Reilly Auto Parts.