"I don’t know what Donald Trump is paying attention to," Perry says.
“I have enough to do to get my message out to people,” Kasich said.
"We all need to take a deep breath," he said about polls.
Trump leads the GOP field in a new Wall Street Journal/NBC News poll.
The GOP presidential candidate sparked a firestorm with similar comments in February.
He added he doesn't see "a dime’s worth of difference" between Hillary Clinton and Bernie Sanders.
“Unless we can have full access, 24/7, anytime, any day, there's nothing to negotiate," he said.
He is taking aggressive steps in Iowa and New Hampshire.
A new report says the vice president is taking a fresh look at challenging Hillary Clinton.
The Republican presidential candidate published realworldhillary.com.