Biometric technology is expanding at airports across the United States — and the world — and transforming the way we move through them, from checking a bag to boarding the plane.
Representative Mark Green, the chairman of the Homeland Security Committee, announced he would retire from Congress, adding to the number of powerful G.O.P. chairmen who will not return.
In a redo of their first failed attempt, Republicans pushed through the charges over solid Democratic opposition, making the homeland security secretary the first sitting cabinet member to be impeached.
The first impeachment of a sitting cabinet member sets off a series of choreographed rituals that dates back to the impeachment of former President Andrew Johnson in 1868.