Former Wisconsin congressman Sean Duffy was sworn in as new U.S. Transportation Secretary this week. Here's what his responsibilities include.

Mr. Duffy, a former congressman who had appeared on track to sail through with little opposition, overcame a last-minute swell of Democratic anger over the White House’s sweeping funding freeze.

Sean Duffy was sworn in as Transportation Secretary on Tuesday and is now grappling with the fallout of the deadliest aviation disaster in the U.S. in 23 years. Duffy was most recently the co-host of “The Bottom Line” on Fox Business,