William Daniel Johnson, the leader of the white-nationalist American Freedom Party, was selected as a delegate from California on Donald Trump’s slate, Mother Jones reported Tuesday. Johnson allegedly disclosed details about his extremist political beliefs in the application to become delegate and he has been an outspoken supporter of Trump’s in recent months, setting up robocalls in various states on his behalf as well as a hotline for Trump supporters who have felt “marginalized.”…

In a Tuesday afternoon statement, however, the Trump campaign said, “a database error led to the inclusion of a potential delegate that had been rejected and removed from the campaign’s list in February 2016.”