Dustin Stockton, a conservative activist linked to Steve Bannon, is fielding questions Monday from congressional investigators scrutinizing the Jan. 6 attack on the Capitol, according to two sources familiar with the interview.

A spokesperson for the committee declined to comment. Stockton did not immediately respond to a request for comment.

Stockton previously drew national media attention for his connection to We Build The Wall, a crowdfunding effort that purported to raise money to construct a wall on the border between the U.S. and Mexico. Prosecutors in New York charged Steve Bannon and three others with defrauding donors in relation to the fund. In his final weeks in office, Trump pardoned Bannon for his involvement…

In the days and weeks leading up to the pro-Trump Jan. 6 rallies, Stockton heavily promoted the event. And in the aftermath, he has defended some of the militia groups who had significant contingents charged with participating in the attack on the Capitol.