In a battle over jurisdiction, or lack thereoff, the United Nations is contesting President Trump’s legal right to deny entry to America for the International Criminal Court’s prosecutor, Karim Khan.

Following Mr. Trump’s February 6 executive order that imposed sanctions on the ICC, the Department of Treasury on Thursday added Mr. Khan, a British citizen, to its “Specially Designated Nationals and Blocked Persons List.” The designation denies entry to listed persons. 

Mr. Trump’s executive order followed a failed attempt to legislate sanctions against the ICC for issuing warrants for the arrests of Israeli officials and for investigating American military personnel. Senate Democrats blocked the legislation.  

“We believe that as a party to the Host Country Agreement, the U.S. will abide by all of its obligations,” a spokesman for the United Nations, Farhan Haq, said Thursday. When “people need to enter the United Nations for different duties,” he told the Sun, “the Host Country Agreement is designed to make sure that will be allowed to proceed.”