Democrat Conor Lamb has been sworn in as the newest member of Congress after winning a closely watched special election in Pennsylvania.
Members of the state's congressional delegation escorted Lamb to the well of the House where House Speaker Paul Ryan administered the oath.
A Pennsylvania Republican, Bill Shuster, jokingly told the House that he and Lamb come from the same side of the aisle: "Steelers fans, not Eagles."
The top House Democrat, Nancy Pelosi, is recommending that Lamb serve on the Veterans' Affairs Committee and the Science, Space and Technology Committee.
Breaking news and the stories that matter to your neighborhood.
The 33-year-old Lamb won his seat by about 750 votes in a Pittsburgh-area district Donald Trump captured by almost 20 percentage points in 2016.