"Yes, they are coming, they are coming through our porous borders, and yes, they are coming to do us great damage," the Colorado Republican told CNN's Wolf Blitzer on Tuesday. "I don't know why anybody would not think this is true."
The 30-second ad, set to begin running on Iowa cable stations this week, depicts a hooded man walking into a crowded mall with a backpack. Over the sound of a ticking clock, the man abandons the backpack at a bench, and an explosion is heard.
"There are consequences to open borders beyond the 20 million aliens who have come to take our jobs," the ad's narrator says. "Islamic terrorists now freely roam U.S. soil. Jihadists, who froth with hate, here to do as they have in London, Spain and Russia."
- CNN Ticker Producer Alexander Mooney