Donald Trump on Monday night once again ratcheted up his attacks on Sen. Ted Cruz, calling his GOP presidential rival "sick." "This guy is sick. There's something wrong with this guy," Trump said Monday night as he slammed Cruz for the senator's campaign tactics, including the attack ads Cruz and his allies have run against Trump. Cruz's campaign has run several ads scrutinizing Trump's record on a variety of issues important to conservatives. Trump has repeatedly slammed Cruz since the Texas senator surged in the polls ahead of the Iowa caucuses and has since ramped up his attacks on him...