Secretary of State John Kerry says he's willing to testify before the House Oversight committee on the Benghazi attack.
The State Department sent a letter to Chairman Darrell Issa of California. The letter says diplomatic responsibilities will prevent Kerry from appearing on May 29. That's the date of the committee subpoena.
But the department offers alternative dates of June 12 or June 20.
The department also says that if Kerry testifies before the House Oversight panel, then there is no need for him to appear before a newly-formed special select committee investigating the 2012 assault on the diplomatic mission in Benghazi, Libya.
U.S. Ambassador Chris Stevens and three other Americans were killed in the attack.