Kent Caperton, principal of the Ben Barnes Group, said in an interview that his firm was hired in July 2010 on Mr. Armstrong's behalf for a lobbying effort aimed, in part, at raising concerns about Jeff Novitzky, a Food and Drug Administration special agent who was leading the investigation into Mr. Armstrong's U.S. Postal Service cycling team.

WSJ: Armstrong Hired Lobbyist to Raise Concerns About Investigator