Billionaire businessman Donald Trump on Saturday seized on new reports that former Secretary of State Hillary Clinton is under criminal investigation for her private email server, warning that “bad things have to happen.” “I don’t know how a person with that cloud over their head can actually be running for president,” Trump told a rally in Iowa. “If the prosecutors are honorable, if they’re fair, they’re just, sadly, bad things have to happen because what she did is very serious and very criminal,” he said.