used in the attack was a semi-automatic rifle similar to an AR-15."} 5e:{"type":"p","text":"Kevin Rojek, special agent in charge of the Pittsburgh Field Office, told reporters the weapon belonged to the shooter’s father, who purchased it legally. It’s still unclear how Crooks got his hands on the rifle, or if his father was aware that he had taken it."} 5f:{"type":"p","text":"Biden said that he’s directed an independent review of the security present at the rally."} 60:{"type":"p","text":"Trump, meanwhile, is due to arrive in Milwaukee, Wisconsin, for the Republican National Convention (RNC) on July 14, as originally planned. He said in a social media post that he had wanted to delay the travel in the immediate aftermath of the attack, but ultimately decided against it."} 61:{"type":"p","text":"Secret Service officials confirmed on July 14 that no changes have been made to security at the RNC, which starts on July 15, noting that the event has already been given the highest-grade security."} 62:{"type":"p","text":"Over on Capitol Hill, lawmakers are vowing their own investigations into the matter."} 63:{"type":"p","text":"House Speaker Mike Johnson (R-La.) said Congress will probe if there were security lapses at the rally."} 64:{"type":"p","text":"“We need to know: how cou

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