(ABC News) The Internal Revenue Service planted a question at an American Bar Association conference in order to reveal that it had inappropriately targeted conservative groups prior to the 2012 elections. But members of Congress are questioning why they weren’t told earlier.

The question that prompted Lois Lerner, IRS director of tax exempt organizations, to apologize for the agency’s actions came from Celia Roady, a prominent Washington lawyer in private practice. Roady said that she received a call from Lerner the day before the May 10 conference, requesting that Roady ask a question about tax exempt groups.

“I received a call from Lois Lerner, who told me that she wanted to address an issue after her prepared remarks at the [American Bar Association] Tax Section’s Exempt Organizations Committee Meeting, and asked if I would pose a question to her after her remarks,” Roady said in a statement obtained by ABC News.

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