Jon Kyl sworn in as John McCain's successor in U.S. Senate

WASHINGTON (KSAZ/AP) -- Republican John Kyl of Arizona, who served three terms in the Senate before retiring in 2012, has been sworn in to fill the seat left open by the death of Sen. John McCain. Kyl has only committed to serve until the end of the current congressional session on Jan. 3. Still, he'll have the chance to cast key votes, including whether to confirm Brett Kavanaugh to serve on the U.S. Supreme Court.