Whistleblowers told the House Judiciary Committee that Secret Service resources were stretched thin last week ahead of a rally in Butler, Pennsylvania, where the attempted assassination of former President Donald Trump occurred, because the agency was also protecting the NATO summit, the committee said in a letter to the FBI on Thursday.

Committee Chairman Jim Jordan (R-OH) wrote that he had learned from the unnamed whistleblowers that the FBI was present during two briefings on July 8 when the rally was discussed.