The town hall was interrupted several times by protesters.
"I fundamentally believe that the first and foremost priority is to fix the unlawful immigration."
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.
OPINION | No other politician has had such an impact simply by being
"Who wants those [bad] people thrown out?," Trump asked.