President Obama may have promised “to hold the responsible parties accountable” for the Internal Revenue Service targeting of conservative non-profit groups, but one of the agents at the center of the scandal was recently promoted, an IRS source tells The Washington Examiner. Through 2012, then-Exempt Organization Specialist Stephen Seok signed many of the intimidating letters sent to conservative nonprofits. For example, this January 2012 letter sent to the Richmond Tea Party demanded the date, time and location of all group events, as well as copies of all handouts provided at the events, and the names and credentials of all organizers....