[1] Brewton is best known for an investigative journalism series he wrote for the Houston Post that were the basis of a book, The Mafia, CIA and George Bush.
He travels frequently to help with his mother's working cattle ranch in Lampasas County.
[4] He is the author of the book The Mafia, CIA and George Bush, which is based on his investigations of powerful Texas businessmen, politicians, and their connections to the savings and loans scandals of the 1980s.
[8] Andrew Ferguson of the Weekly Standard characterized Brewton's book as one of a series of anti-Bush books "written in Texas by veteran Texas activists who have grown bitter from the endless frustration and resentment that is their unhappy lot."
[10] Texas politician Jon Lindsay took out a newspaper advertisement to discredit Brewton's book.