A small super PAC supporting the presidential campaign of Sen. Ted Cruz has released a radio ad hitting Sen. Marco Rubio — in part because they don’t like spots another pro-Cruz super PAC is airing.

The Courageous Conservatives PAC created a 60-second radio ad to air in Iowa during talk radio shows slamming Rubio for doing little in the Senate aside from working with others to craft a controversial immigration reform bill that did not pass.

“We all loved how Marco Rubio took apart Jeb Bush in the debate. Wasn’t it great? But what’s Rubio ever done? Anything? Other than his gang of eight amnesty bill, can anyone think of anything Marco Rubio’s ever done?” the ad said. “Anything at all besides amnesty? Marco Rubio looks good on TV, but that’s about it.”

Read the article “Pro-Cruz Group Releases Ad Hitting Rubio Because Other Super PACs’ Spots are ‘Boring’” on washingtonpost.com.