Mitt Romney to announce U.S. Senate campaign in online video

SALT LAKE CITY — Mitt Romney will launch his campaign for U.S. Senate on Thursday in an online video, sources confirmed Wednesday.Romney's first public appearance as a candidate would be as the keynote speaker at the Utah County Republican Party's Lincoln Day Dinner in Provo on Friday.Since telling the Deseret News a year ago this month that he was leaving the door open for another run for political office, the 2012 GOP presidential nominee has been coy about his future.Romney has not face