He joined the board of directors of Tenet Healthcare, the biggest publicly traded hospital company in the United States, in April 2007.<ref>http://money.cnn.com/2007/04/12/news/newsmakers/bush.reut/index.htm</ref><ref>http://www.floridatoday.com/apps/pbcs.dll/article?AID=/20070412/BREAKINGNEWS/70412027/1086</ref>