Mitt Romney plans, then abruptly cancels online launch of U.S. Senate campaign

SALT LAKE CITY — Mitt Romney abruptly canceled the online launch of his U.S. Senate campaign scheduled for Thursday, citing the deadly shooting at a Florida school Wednesday."As a father and grandfather, my heart aches for the victims of today's tragic events. My prayers go out to all of the families and loved ones affected by this senseless act of violence," he tweeted."Out of respect for the victims and their families, I will not be making an announcement tomorrow about the Senate race."