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Treaties and Other International Acts Series (TIAS)

By law, 1 U.S.C. 112a(a), the Secretary of State is responsible for compiling, editing, indexing, and publishing a compilation entitled “United States Treaties and Other International Agreements,” which contains all treaties and international agreements other than treaties to which the United States has become a party during the calendar year.   This compilation “shall be legal evidence of the treaties, international agreements other than treaties, and proclamations by the President of such treaties and agreements, therein contained, in all the courts of the United States, the several States, and the Territories and insular possessions of the United States.”  

Further, pursuant to 1 U.S.C. 112a(d), the Secretary of State also “shall make publicly available through the Internet website of the Department of State each treaty or international agreement proposed to be published in the compilation entitled 'United States Treaties and Other International Agreements' not later than 180 days after the date on which the treaty or agreement enters into force. 

The Secretary of State may determine that publication of certain categories of agreements is not required if certain criteria in 1 U.S.C. 112a(b) are met.  The Department must publish notice of any such determination in the Federal Register. 

The first official publication of U.S. treaties and international agreements is through the “Treaties and Other International Acts Series” (TIAS), which is a series of consecutively numbered, individually paginated pamphlets containing the texts of agreements in English and other official languages of the agreement.  After appearing in TIAS in “slip” form, U.S. treaties and international agreements are published in bound volumes of “United States Treaties and Other International Agreements.” 

The Office of the Assistant Legal Adviser for Treaty Affairs has begun efforts to make TIAS available on-line, as well as to reduce the delay between entry into force of an agreement and its official publication.  In the interim, and in furtherance of 1 U.S.C. 112a(d), you may view the texts of agreements that entered into force after 1998 on the Department of State's Freedom of Information Act Document Collections page. The listed documents are agreements reported to Congress under the Case-Zablocki Act and are organized by signing date. These documents are largely unedited and subject to possible correction before their official publication in TIAS. In addition, this is not a complete listing of agreements and is a temporary listing until agreements are published in TIAS.  Treaties to which the United States has become a party may be determined by consulting Treaties in Force or, if recently entered into force, Treaty Actions. The text of treaties, as published as Senate Treaty Documents, may be accessed through the Library of Congress' THOMAS website.