Facebook CEO Mark Zuckerberg returns to Capitol Hill for a second day of questioning. Today, Zuckerberg testifies before the House Committee on Energy and Commerce. Ahead of the hearing, we spoke to Congressman Debbie Dingell (D-MI) about what she wants to hear from the Facebook CEO. Dingell is concerned about the privacy of Americans who use the social networking site and speculates about what a regulated Facebook would look like. In other Washington news, House Speaker Paul Ryan (R-WI) announced today that he will not seek re-election this November. Ryan held a press conference to elaborate on his decision. He said he thinks he's done his part and looks forward to spending more time with his family. Also, Joanna Coles stops by to talk about her new book, "Love Rules." She says her book can help readers find real love in the age of Tinder and Bumble. Coales, who sits on the board of directors for Snap, discusses what it's like to be a woman on the board of a Silicon Valley tech giant.