Roger Stone pleads not guilty to Mueller charges

Former Trump aide Roger Stone pleaded not guilty Tuesday in federal court to charges from special counsel Robert Mueller's office that he lied to Congress about communications with the Trump campaign about hacked emails possessed by WikiLeaks.

The big picture: Stone's plea isn't a surprise. He said last week after his arrest that he looked "forward to being fully and completely vindicated" and stated that he'd never testify against President Trump.