The 2016 contender said immigrants were only entitled to enter America if they did so legally.
Huckabee warned against encouraging reliance on government programs.
The Kentucky Republican urged his party to "flip the tables" on Democrats.
“Our nation is on the verge of another American century,” the Florida Republican said.
Paul called NSA surveillance "one of the worst parts of the Obama administration."
He added the GOP could lose the 2016 foreign policy debate if Paul is the party's nominee.
"If somebody says they want to kill you, believe them,” Cruz said of Iran.
"We can have a free-for-all, fratricide, demolition derby," he warned the GOP.
The South Carolina Republican mercilessly mocked the Dem presidential contender.
Scott Wong 04/06/15 04:06 PM EDT
J.D. Winteregg will try again to unseat Boehner who took 75 percent of the 2014 primary vote.