US President Donald Trump hosts a lunch with the Kennedy Center Board members as chief of staff Susie Wiles looks on at the White House in Washington, DC, on March 16, 2026. US President Donald Trump’s chief of staff Susie Wiles has been diagnosed with breast cancer but will continue to work during treatment, Trump said Monday. The first woman to ever work as White House chief of staff, 68-year-old Wiles has been widely credited with driving Trump’s second presidency forward behind the scenes. (Photo by Annabelle GORDON / AFP via Getty Images)