Politico reported February 22 that Arent Fox partner Craig Engle has been retained by the current US Ambassador to China, Jon Huntsman, who is considering running for president in 2012:  

• Jon Huntsman's presidential campaign-in-waiting is hiring more influential Washington operatives. POLITICO's “Playbook” reports that Al Shofe and Craig Engle are the latest additions to the Huntsman team.
  
  Engle is slated to become Huntsman's legal counsel. He was the chief counsel for the National Republican Senatorial Committee from 1995 until 2000, and is the founder of the Arent Fox Political Law Group. …  Huntsman won't decide whether he'll run for president until after he concludes his tenure as U.S. Ambassador to China on April 30.