Christie, Perry and Pataki have all criticized the business mogul.
Actress says Trump's comments will drive Latinos to the polls.
It will be her fourth visit to the Hawkeye State of the campaign.
Trump's comments on immigration "have no place in this race," Christie said.
"It's Republicans ... who are truly offering black Americans the hope for a better life."
“What we’ve agreed to pay doesn’t even dent the cost of production,” says network executive.
The former senator called for a “fresh approach” to solving the nation’s biggest problems.
"I don't think Donald Trump's remarks reflect the Republican Party," Perry says.
The campaign says 99 percent of the donations were for $250 or less.
The Democratic presidential hopeful has doubled his support, gaining on Hillary Clinton.