As Elon Musk continues to argue that Social Security drives illegal immigration, a new effort at the agency aims to curb it.

© Haiyun Jiang for The New York Times

Medicare spending on “skin substitutes” made of dried placenta has soared as doctors pocket lucrative discounts from sellers.

© Photoillustration by The New York Times

The government should make it easier to get access to GLP-1s.