FILE - Robert F. Kennedy, 38-year-old American attorney general and brother of the late U.S. President, John F. Kennedy, is accompanied by his wife Ethel, leaving the U.S. Embassy for the airport in London, Jan. 25, 1964, to fly to Derbyshire to visit the grave of his sister who died in 1947 in a plane crash. (AP Photo/Laurence Harris, File)

Former Massachusetts U.S. Rep. Joseph Kennedy II, center right, son of the late Ethel Kennedy, arrives at Our Lady of Victory church, for Ethel Kennedy's funeral, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

James Kennedy, great grandson of Ethel Kennedy, wife of Sen. Robert F. Kennedy, is seated in a vehicle that forms part of a funeral procession departing Our Lady of Victory church, following funeral services for Ethel Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Massachusetts Gov. Maura Healey, center, speaks with Monsignor Kenneth Velo, right, following funeral services for Ethel Kennedy, wife of the late Sen. Robert F. Kennedy, at Our Lady of Victory church, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Former Massachusetts U.S. Rep. Joseph Kennedy II, center left, son of the late Ethel Kennedy, speaks with fellow mourners outside Our Lady of Victory church, following funeral services for Ethel Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Mourners depart Our Lady of Victory church following funeral services for Ethel Kennedy, wife of the late Sen. Robert F. Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Former U.S. Rep. Patrick Kennedy, center, grandson of the late Ethel Kennedy, departs Our Lady of Victory church following funeral services for Ethel Kennedy, wife of the late Sen. Robert F. Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Joseph Kennedy III, grandson of Ethel Kennedy, pauses on the steps of Our Lady of Victory church following funeral services for Ethel Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Joseph Kennedy III, center right, grandson of Ethel Kennedy, hugs fellow mourners following funeral services at Our Lady of Victory church for Ethel Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Caroline Kennedy, center, daughter of Pres. John F. Kennedy, speaks with people as she departs Our Lady of Victory church following funeral services for Ethel Kennedy, wife of Sen. Robert F. Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Mourners hug following funeral services for Ethel Kennedy, wife of the late Sen. Robert F. Kennedy, at Our Lady of Victory church, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Chris Kennedy, center, son of Ethel Kennedy, departs Our Lady of Victory church following funeral services for Ethel Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

FILE - Ethel Kennedy, from the film "Ethel," poses for a portrait during the 2012 Sundance Film Festival on Sunday, Jan. 22, 2012, in Park City, Utah. (AP Photo/Victoria Will, File)

A funeral procession departs Our Lady of Victory church following services for Ethel Kennedy, wife of the late Sen. Robert F. Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Pallbearers Max Kennedy, left, Chris Kennedy, behind center left, both sons of the late Ethel Kennedy, and Matt Kennedy, center front, and, Joseph Kennedy III, front second from right, both grandsons of Ethel Kennedy, carry her casket from Our Lady of Victory church, following funeral services, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Former U.S. Rep. Patrick Kennedy, center right above, grandson of the late Ethel Kennedy, speaks with Massachusetts Gov. Maura Healey, below left, as they depart Our Lady of Victory church following funeral services for Ethel Kennedy, wife of Sen. Robert F. Kennedy, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Joseph Kennedy III, center, grandson of Ethel Kennedy, speaks to his wife Lauren Birchfield, second right, following funeral services for Ethel Kennedy at Our Lady of Victory church, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)

Joseph Kennedy III, center right, grandson of the late Ethel Kennedy arrives at Our Lady of Victory church, for Ethel Kennedy's funeral, Monday, Oct. 14, 2024, in Centerville, Mass. (AP Photo/Steven Senne)