A second argument could be made: at the time of their creation, the U.S. State Department did not consider the 1966 Pine Gap Agreement and the General Security Agreement to be binding international agreements. Under current U.S. law, legally binding international agreements can be concluded in the form of treaties or executive agreements. Most U.S. international agreements are executive agreements that, as described by the Congressional Research Service, take three general forms: the tradition of information exchange between the NSA and its 2nd party partners has deep and widespread roots, maintained for nearly three-quarters of a century. During World War II, the U.S. Army and Navy developed independent foreign relations with the British and Dominions of Canada, Australia and New Zealand. These relationships have developed and continued over the decades. The bonds, forged in the heat of a world war and mitigated by decades of trust and teamwork, remain indispensable for the future success of intelligence. Due to its secret treaty status, its existence was not known to the Australian Prime Minister until 1973 and was not made public until 2005.  On 25 June 2010, the full text of the agreement was published for the first time in history by the United Kingdom and the United States and can now be accessed online.   Shortly after its publication, the seven-page UKUSA agreement was recognized by Time Magazine as one of the most important documents of the Cold War and of immense historical importance.
 The United States is involved in a series of international intelligence agreements – one of the most important is the Alliance of Five Eyes. Born out of espionage arrangements forged during World War II, the Five Eyes Alliance facilitates the exchange of signal information between the United States, the United Kingdom, Australia, Canada and New Zealand. Five-eye countries agree to exchange by default all the signals of intelligence they collect, as well as methods and techniques related to signal intelligence operations. When the Five Eyes accepted this exchange of information – before the first transatlantic telephone cable was installed – they could hardly predict the technological advances they expected. Nevertheless, we remain unaware of the current legal framework for the exchange of information between the Five Eyes, including the types of information available to the U.S. government and the rules governing U.S. secret service access to private communications and U.S. secret service data. These security procedures include standard code words for the designation and protection of SIGINT products. “THE UMBRA succeeds DINAR and TRINE as a compartment with the most sensitive SI hardware [Special Intelligence, i.e., signal intelligence]. SPOKE, which may contain information from PLO communication interceptions, is less sensitive.
The least sensitive information is in the MORAY domain. There are also SIGINT subcategory with their own code word designers. The general category of SIGINT for the Soviet Union was . GAMMA B. There are also subcategory in the subcategory: “Therefore, a document could carry the classification TOP SECRET UMBRA GAMMA GYRO.”  Access to this equipment requires special security clearances.