EXCLUSIVE: On the heels of a strong performance at Fox Business Network’s debate in South Carolina, Sen. Marco Rubio is releasing two new television ads in Iowa that hammer home his stance on border security and retaliate against negative ads by one of his Republican rivals. 

In one of the 30-second ads, called "Happening," Rubio fires back at the barrage of early state attack ads by the Jeb Bush super PAC, Right to Rise USA, tha‎t have hit the Florida senator on the issue of illegal immigration.

Watch the new TV ad, "Happening"

“We all see what's happening. Jeb Bush is desperate and spending millions on false attacks. Don't fall for it," Rubio says, looking into the camera.

"When I'm president, there will be no amnesty. I'll cancel Obama's unconstitutional executive orders; cut sanctuary city funding; and deport criminal aliens," Rubio adds.

Rubio is now in third place in Hawkeye state polls, behind Donald Trump and Ted Cruz.

The other ad released by the Rubio campaign‎ Friday features the endorsement of Kelly Terry-Willis, the sister of slain U.S. Border Patrol agent Brian Terry -- who was murdered by Mexican bandits in 2010 in the Arizona desert, a killing tied to the infamous federal gun-tracking operation knows as “Fast and Furious." 

“I know and trust that with Marco we will finally secure our border, and ensure that the men and women who served alongside Brian have the support from Washington they need," she says.

Watch the new TV ad, "Support" 

The ads start running in Iowa Friday, and were planned before the debate.