The unanimous ruling from the panel upholds a lower court's decision that a tranche of Trump White House records can be provided to the Democratic-led Jan. 6 select committee.
The committee said Clark, who had promised to pursue former President Donald Trump's baseless election fraud claims, failed to answer questions during a deposition.
The House panel investigating the Jan. 6 attack on the Capitol has issued five new subpoenas for witnesses lawmakers want to hear from, in addition to 40 witnesses subpoenaed already.
More than 100 people charged in the Jan. 6 riot at the U.S. Capitol have pleaded guilty. But others are promising to take their cases to trial, including some who have decided to represent themselves.
In a wide-ranging interview with NPR's Michel Martin, Rep. Adam Schiff discusses his regrets from President Donald Trump's first impeachment trial and his relationship with his GOP colleagues.
In an interview, Sheriff Chad Bianco sought to minimize his past affiliation with the group, 17 members of which have been indicted in connection with the Jan. 6 insurrection at the U.S. Capitol.
The ease with which the attacker gained such close access to the Library of Congress on Thursday raises new questions about security, just seven months after the Jan. 6 insurrection.