Yale Law School’s 2014–15 fellowship biographies put her in Samantha Power’s shop. The entry: “Julia Spiegel ’13 will serve as a policy advisor in the Executive Office of the U.S. Ambassador to the United Nations, Samantha Power.” It says she would author briefing papers, assist with speeches, and work on civilian protection, international justice, accountability, and sanctions — “with a range of colleagues at the U.S. Mission, the State Department, and the White House.” Those are Yale’s words for the fellowship year. They are not a court.
Later official biographies upgrade the title. The Ninth Circuit ALR page, GovAct, Haas, and BIO International all say she “served as a senior advisor to U.S. Ambassador to the United Nations Samantha Power.” Squire Patton Boggs, November 22, 2021, adds that during a 2012 Foundation fellowship she “worked at the US State Department in legal and policy roles.” This site records both the Yale “policy advisor” line and the later “senior advisor” line. It does not invent a White House commission or a Trump-era UN post. Power was President Obama’s UN ambassador. That is the documented apparatus.