EXCLUSIVE — A super PAC supporting Republican David McCormick’s bid to unseat Sen. Bob Casey (D-PA) in the fall launched a new ad attacking Democrats over the crisis at the southern border.

The 30-second ad from the Keystone Renewal PAC, titled “Dangerous,” blasts President Joe Biden and, by extension, Casey for not stopping criminal illegal immigrants from entering the United States. It is part of a $4 million ad buy announced last month and will run in the Harrisburg, Johnstown, Pittsburgh, and Wilkes-Barre media markets.