# The Social Security (United States of America) Order 1997, Paragraph: Article 3


This Supplementary Agreement shall enter into force on the first day of the third month following the month in which both Governments shall have informed each other by a formal exchange of notes that the steps necessary under their national statutes to enable the Supplementary Agreement to take effect have been taken.

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Source: https://www.legislation.gov.uk/uksi/1997/1778/schedule/1/paragraph/wrapper3 (the official version)
Page: https://openlegislation.uk/social-security-united-states-of-america-order-1997/schedule-1/paragraph-wrapper3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.