WASHINGTON (AP) - The chairman of the House Oversight Committee has issued a subpoena for an IRS official to testify at a hearing on the Freedom of Information Act.

WASHINGTON (AP) The chairman of the House Oversight Committee has issued a subpoena for an IRS official to testify at a hearing on the Freedom of Information Act.

Committee Chairman Jason Chaffetz (CHAY'-fits) said he issued the subpoena after the IRS declined to provide the official who oversees information requests. Instead, the IRS offered to have IRS Commissioner John Koskinen (KAHS'-kihn-ihn) testify.

In a letter to Koskinen, Chaffetz said he wanted to hear from the agency's expert on responding to information requests. Chaffetz issued the subpoena Friday for Mary Howard, the IRS director of privacy, governmental liaison and disclosure. She reports to a deputy commissioner.

The IRS did not immediately respond to a request for comment.

The hearing is Wednesday. Officials from several government agencies are scheduled to testify.