Tulsi Gabbard has resigned as President Donald Trump’s director of national intelligence, saying she needed to step away as her husband battles cancer. She is the fourth Cabinet official to depart during Trump’s second term. In her resignation letter, which she posted on social media, Gabbard said she told Trump of her decision to leave office on June 30. She said her husband had recently been diagnosed with a rare form of bone cancer and “faces major challenges in the coming weeks and months.” Trump posted that her principal deputy, Aaron Lukas, will serve as acting director of national intelligence.