U.S. District Judge Tanya S. Chutkan has issued a decision affording the ACLU Foundation "immediate and unmonitored access" to a U.S.-Saudi dual national in U.S. military custody for the limited purpose of determining whether he wishes to have the organization, which asserts "next friend" standing, litigate a habeas corpus petition on his behalf. Judge Chutkan also ordered the Department of Defense to refrain from transferring the detainee until the organization informs the court of his wishes. The case is American Civil Liberties Union Foundation v. Mattis, Civil No. 17-2069 (D.D.C. Dec. 23, 2017). Charlie Savage has the story here in The New York Times.