The Illegitimate Court Counteraction Act would authorize the President to impose sanctions against individuals and organizations working with the International Criminal Court who attempt to investigate, arrest, or prosecute U.S. citizens, officials, or military personnel, as well as citizens of U.S. allies who have not consented to ICC jurisdiction. The sanctions would include freezing assets in the United States, denying visas, and barring entry to the country, and would apply to immediate family members of targeted individuals. The bill was introduced in response to the ICC's May 2024 announcement of arrest warrant applications against Israeli officials, reflecting the position that the court has no legitimate authority over countries that are not party to the Rome Statute, including the United States and Israel. The legislation would immediately rescind all current appropriations for the ICC and prohibit any future federal funding to the organization, with no specific dollar amounts specified. The President could waive sanctions in 90-day increments if deemed vital to national security, but only if the ICC ceases all investigations and efforts against protected persons.