Donald Trump is in a dead heat with Democratic nominee Hillary Clinton in South Carolina.
Trump is debating softening his immigration proposals.
The public, unsecured network mocks Clinton's email controversy.
The criticism comes amid questions over the GOP nominee's position on immigration.
"We must get to the bottom of what looks like a pay to play scheme,” Christie said.
OPINION | No other politician has had such an impact simply by being
"Who wants those [bad] people thrown out?" Trump asked.
Meg Whitman paid $50,000 to attend a Clinton fundraiser this week.
"We’re going to build a wall. We’re going to enforce the laws that are on the books today."
Donald Trump speaks to supporters in Austin, Texas, on Tuesday night.