Natalie Harp, a 35-year-old Trump aide, has become a powerful gatekeeper controlling the president's information and social media. She sleeps at his golf course, texts world leaders on his behalf, and supplies him with fringe news articles that fuel his false beliefs. Maggie Haberman explains why her unprecedented closeness to Trump raises alarm about presidential isolation and misinformation. Natalie Harp functions as Trump's primary information filter, providing him curated content from fringe websites that affirm his preferred reality rather than presenting objective facts.