Former U.S. Representative Anthony Weiner pleaded guilty Friday to criminal charges in connection with his online communications with a 15-year-old girl. Weiner pleaded guilty to a charge of communicating sexual material to a minor. He could be sentenced to years in prison, and agreed not to appeal any sentence between 21 and 27 months in prison. Weiner was already in federal custody prior to the court hearing. The judge said he would have to register as a sex offender.