Sebastian Gorka, a former White House advisor who has generated controversy in the past in discussions about Islam and white supremacy, is set to join Fox News Channel as an analyst.

Gorka made the announcement during Fox News Channel host Sean Hannity’s radio program. A Fox News spokesperson confirmed Gorka would be joining the network as a contributor.

Gorka served as a deputy assistant to President Donald Trump in the first seven months of his White House tenure. He is better known, however, for giving fiery interviews on Fox News, CNN and other outlets. He left the White House after General John Kelly took over as Chief of Staff and his departure was seen as a signal Kelly was working to bring order to a chaotic working atmosphere.

Fox News in October was the most-watched cable-news network and also the most watched by people between 25 and 54, the demographic coveted most by advertisers in news programming