Canadian Social Security Agreement. OEIO manages the Social Security program outside the U.S. and implements the benefit provisions of international agreements.Issue title: Totalization Agreements. Provide access to all of the forms related to International Social Security Agreements. In general aliens performing services in the United States as employees are liable for U.S. Social Security and Medicare taxes. USAID's investments help achieve sustainable development progress, advancing our collective security, health, and prosperity. How do I apply for a certificate of coverage in the US? Religious knives, swords and other objects are not permitted through the security checkpoint and must be packed in checked baggage. Please read all instructions first and type or print in black ink to complete this form. For information or questions, visit travel.state.