Pete Hegseth, President-elect Donald Trump’s choice to lead the Pentagon, will face his greatest hurdle yet as he takes his turn in the hot seat for his confirmation hearing before a key Senate panel on Tuesday, in which Democrats intend to grill him over his past conduct, beliefs, and qualifications.

The former Fox News host will be forced to comment publicly on several controversies in detail for the first time. He is facing accusations of sexual assault stemming from a 2017 incident that he said was consensual. He is also facing allegations involving alcohol abuse and claims that he mismanaged two conservative veterans’ groups.