Hunter Biden, the president's son, plans to plead guilty to federal tax charges, avoding prison. As part of the deal, he admitted to felony gun possession. A source with knowledge of the agreement said it is expected to mean that for two years, Hunter Biden must remain drug-free and can't commit additional crimes. This follows a federal probe into his business dealings. Senior investigative correspondent Catherine Herridge, CBS News congressional correspondent Scott MacFarlane and CBS News senior White House and political correspondent Ed O'Keefe have more.