Trump stumps on Immrigation in Iowa

"Speaking on the campaign trail in Iowa, he outlined what he called an "entry-exit" program, which would track those who overstay their visas.
He also reiterated his support for building a wall along the southern border with Mexico.
And he said he would stop illegal immigrants getting welfare benefits.
"I am going to build a great border wall, institute nationwide e-verify, stop illegal immigrants from accessing welfare and entitlements, and develop an exit-entry tracking system to ensure those who overstay their visas are quickly removed," Mr Trump said.

     "If we don't enforce visa expiration dates, then we have an open border - it's as simple as that," he added." BBC