The Presidential Memorandum for the Secretary of Defense and the Secretary of Homeland Security Regarding Military Service by Transgender Individuals is the 43rd presidential memorandum signed by U.S. President Donald Trump on March 23, 2018. The memorandum: * Revokes the Presidential Memorandum for the Secretary of Defense and the Secretary of Homeland Security. * The United States Secretary of Defense and United States Secretary of Homeland Security may exercise their authority to implement any appropriate policies concerning military service by transgender individuals.