Maybe not proof, but there is solid evidence that people connected with the Bushes sided and abetted the persecution. The so called whistle blowers have been represented for the last 3 years for free by Johnny Sutton who worked in the George W Bush administration.
Scroll to “ Citizen Journalism Uncovers Potential Bush Family Connection To The Paxton Impeachment “ podcast and listen. About 26 minutes long. She found all this through public records.
https://www.playpodcast.net/podcast/the-michael-berry-show/#e2949-2661