IRS Commissioner John Koskinen visited a group of moderate House Republicans on Wednesday in an attempt to avoid impeachment at the hands of frustrated House investigators.

House Oversight and Government Reform Committee chairman Jason Chaffetz, R-Utah, has accused Koskinen of defying congressional subpoenas and giving investigators false information pertaining to the agency’s inappropriate targeting of Tea Party groups. The committee, which includes some of the most aggressive members of the GOP conference, has been pushing GOP leaders to impeach Koskinen for nearly two years, and the issue is expected to come to a head next week.