USA: Double taxation agreement, Exchange of Notes: In general
it is understood that the two Governments shall consult together at regular intervals regarding the terms, operation and application of the Convention to ensure that it continues to serve the purposes of avoiding double taxation and preventing fiscal evasion and shall, where they consider it appropriate, conclude Protocols to amend the Convention. The first such consultation shall take place no later than December 31st in the fifth year following the date on which the Convention enters into force in accordance with the provisions of Article 29 (Entry into Force). Further consultations shall take place thereafter at intervals of no more than five years.
Notwithstanding the preceding paragraph, either Government may at any time request consultations with the other Government on matters relating to the terms, operation and application of the Convention which it considers require urgent resolution.