Congressional investigators have been finding more breadcrumbs on the trail of Andrew Strelka, the former IRS Exempt Organizations staffer who later became the Justice Department’s attorney handling one of the viewpoint discrimination cases against the IRS.

We told you recently about Mr. Strelka’s sudden withdrawal as Justice’s lead attorney on the suit brought by Z Street, a Philadelphia pro-Israel group that says it was told its tax-exempt application was delayed because a special unit in Washington was reviewing groups…