"Donald Trump, like every other candidate, will rise and fall,” said Santorum.
Paul had chalked up Trump's support to a "temporary loss of sanity."
"I think most Americans don't want their tax dollars going to this," he said.
Jonathan Easley 08/02/15 10:30 AM EDT
Ohio Gov. John Kasich entered the GOP race late but has already made inroads.
"They attacked me first and I hit them back," he said Sunday.
The GOP presidential candidate also criticized President Obama's record on the Middle East.
“Most Republican voters hate their party,” Michael Needham said.
Christie said he is still deciding what to do with 11 million illegal immigrants in the U.S.
"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.