In his six years leading the legal department at Yahoo Inc., Mike Callahan has overseen his fair share of legal drama. Last year, he helped fend off an unsolicited acquisition offer by Microsoft Corp., then watched as an advertising deal with Google Inc. fell through in the face of Department of Justice scrutiny.
In November 2007, Callahan found himself in the hot seat before the House Foreign Affairs Committee, where he and then-chief executive Jerry Yang were asked ... (continued)