In a letter dated July 21, 2023, two weeks after the urgent appeal, Mayorkas dismissed the request without explanation.

The letter to Secret Service Director Kimberly A. Cheatle said, "On May 26, 2023, candidate for President Robert F. Kennedy, Jr. submitted a request to the Department of Homeland Security for United States Secret Service protection. In accordance with the authority set forth in Title 18, United States Code, Section 3056(a)(7), and in consultation with the Candidate Protection Advisory Committee, I decline to identify candidate Kennedy for United States Secret Service protection at this time."