President-elect Trump’s latest Cabinet announcement came Monday evening, when he tapped Sean Duffy to be his Transportation secretary. Since he was elected earlier this month, Trump has named to his second administration numerous officials,

Donald Trump has nominated Fox Business host Sean Duffy to be the next Transportation Secretary. The former congressman will replace Pete Buttigieg in January to oversee a huge federal portfolio of infrastructure spending and transit regulations.

Here’s what you need to know about Sean Duffy, who was nominated by President-elect Donald Trump to head the agency overseeing aviation, rail, and transit.