This bill, known as the "Muslim Brotherhood Terrorist Designation Act of 2025," mandates the President to designate the Muslim Brotherhood as a foreign terrorist organization. It requires the President to impose sanctions on the Muslim Brotherhood and any successor organizations within 90 days of enactment. The legislation also directs the Secretary of State to submit annual reports to Congress, identifying all Muslim Brotherhood branches and assessing their eligibility for terrorist designation. The bill amends the Anti-Terrorism Act of 1987 to explicitly include the Muslim Brotherhood and its affiliates as terrorist organizations, similar to the existing treatment of the PLO. These amendments incorporate new findings, asserting that Hamas is a Muslim Brotherhood branch and citing its designation as a foreign terrorist organization and its role in the October 7, 2023, attacks. Consequently, the bill prohibits the Muslim Brotherhood's operations within the United States and mandates a minimum 4-year sanction period. A key provision requires the Secretary of State to impose sanctions on any foreign person determined to be a Muslim Brotherhood member, leading to mandatory ineligibility for visas, admission, or parole into the United States. This includes the immediate revocation of any current visas. The bill broadly defines "Muslim Brotherhood branch" to encompass entities like Hamas and other organizations operating in numerous specified countries, ensuring comprehensive application of these measures.