 The FBI identified the suspect as Thomas Matthew Crooks, a 20-year-old from Bethel Park, Pennsylvania, which is about 40 miles or so from Butler, where the rally took place. Our colleague Stephen Fowler has confirmed that Crooks was a registered Republican. That's according to Pennsylvania voter registration records. And federal election campaign data also shows that Crooks donated $15 in 2021 to ActBlue, which is a Democratic-allied organization.