Thomas Matthew Crooks' father searched for ways to block his son's gun access months before the Butler, Pennsylvania, assassination attempt on Trump.
https://www.foxnews.com/politics/gop-lawmakers-blindsided-new-revelations-about-trump-butler-shooter-awfully-strange
https://www.foxnews.com/politics/gop-lawmakers-blindsided-new-revelations-about-trump-butler-shooter-awfully-strange