...Miller has served most of his 25 years at the IRS, an agency in the Treasury Department, in its Tax Exempt and Government Entities Division (TE/GE).
Starting as special assistant to the assistant commissioner for Employee Plans and Exempt Organizations, Miller rose to acting assistant commissioner, then director of Exempt Organizations from 1999 to 2004, capping his TE/GE service as commissioner of TE/GE from 2004 to April 2009...
But not during the run up to the election of 2012.