Joni Ernst is a Republican U.S. senator from Iowa, in office since 2015, and a retired lieutenant colonel of the Iowa Army National Guard. Her place in the UAP record comes through defense oversight: as the senior Republican on the Senate Armed Services Subcommittee on Emerging Threats and Capabilities, she questioned the directors of the All-domain Anomaly Resolution Office at its open hearings in 2023 and 2024, and she now chairs the subcommittee.

Born Joni Culver in Red Oak, Iowa, in 1970, Ernst earned a psychology degree from Iowa State University and a master's in public administration from Columbus State University. She served 23 years in the Army Reserve and Iowa Army National Guard, commanding a transportation company in Kuwait in 2003 and 2004 during the Iraq War and later the Guard's largest battalion at Camp Dodge. She was Montgomery County auditor and then a state senator before winning election to the U.S. Senate in 2014, becoming the first woman to represent Iowa in either house of Congress. Reelected in 2020, she chaired the Senate Republican Policy Committee from 2023 to 2025 and leads the Senate Small Business Committee. In September 2025 she announced she would not seek reelection in 2026.

At the 2023 Senate Armed Services UAP hearing, Ernst framed AARO's work around domain awareness after the downing of a Chinese surveillance balloon and three other objects that year. She asked director Sean Kirkpatrick whether Chinese or Russian technology could explain some anomalous cases; he replied that he had concerning indicators but no evidence that adversaries were responsible. She also pressed him to keep the new office from duplicating functions elsewhere in the Defense Department and intelligence community.

At a second hearing in November 2024, she opened by asking whether UAP reflected foreign technology beyond American capabilities or unknown scientific phenomena. She asked director Jon Kosloski whether AARO worked with universities, how it balanced public demands for transparency against classified information, and what precautions the government should take. Kosloski said academic partnerships were lacking because much of the data was classified, and named reducing stigma as the first step. His statement for the record reported more than 1,600 cases and no verifiable evidence of extraterrestrial activity.

Ernst's record on the subject is limited and consistently framed as national security rather than disclosure. In 2026, disclosure advocates including the Good Trouble Show repeatedly tagged her among senators they urged to act, while her own May 2026 NewsNation appearance concerned Democratic candidates rather than the UFO files discussed later in that broadcast. Her significance is institutional: across two Congresses she has helped lead the Senate panel that has questioned AARO's directors in public.