The U.S. Supreme Court has ruled that the revocation of visa petitions by the Homeland Security Secretary is not subject to judicial review. This decision, which emerged from a case involving a green card revocation for a citizen's spouse, reinforces the limitations on court oversight over government actions regarding immigration. The ruling is expected to have significant implications for various immigrant visa applicants, including those related to businesses sponsoring foreign workers. The Supreme Court's decision marks its first merits ruling of the term and reflects a broader trend of restricting judicial review of government decisions in immigration matters.