MATTHEW DALY, Associated Press

WASHINGTON (AP) — The Republican chairman of a powerful House committee has moved to impeach the head of the Internal Revenue Service, saying he has violated the public trust and obstructed congressional investigations into the treatment of conservative groups.

Rep. Jason Chaffetz of Utah said IRS Commissioner John Koskinen failed to comply with a congressional subpoena, allowed documents to be destroyed and misled the public. Chaffetz is chairman of the House Oversight Committee, which has been investigating the IRS for more than two years.

Chaffetz called impeachment an appropriate tool to restore public confidence in the IRS and said it will send a clear signal that the IRS is under repair.

Eighteen Republicans on the committee joined Chaffetz in co-sponsoring the impeachment resolution. The measure now goes to the House Judiciary Committee.