Andy Card, who served as chief of staff to President George W. Bush, said on "CBS This Morning" Friday that the idea of Donald Trump as president worries him, citing the billionaire's "emotional" reactions as cause for concern. "Yes, he scared me," Card said. "I will admit, when Donald Trump entered the race, I didn't think he had a chance." "I want him to succeed, but he's gotta make the move to show me that he's worthy of my support, worthy of my vote," he added. "I will vote for a candidate -- right now I will probably write in...