On July 9, 2007, Bush again invoked executive privilege to block a congressional subpoena requiring the testimonies of Taylor and Miers. Furthermore, White House Counsel Fred F. Fielding refused to comply with a deadline set by the chairman of the Senate Judiciary Committee to explain its privilege claim, prove that the president personally invoked it, and provide logs of which documents were being withheld. On July 25, 2007, the House Judiciary Committee voted to cite Miers and White House Chief of Staff Joshua Bolten for contempt of Congress.