"The story of the 1971 revision of the Warsaw Convention which is contained in the Guatemala Protocol, begins with denunciation by the United States of the Warsaw Convention in November of 1965. The United States was motivated in taking that action at that time by a number of circumstances."
The author of this article represented the United States government in talks concerning amending the Warsaw Convention to increase airline liability limits.
Boyle, Robert P.
"The Guatemala Protocol,"
Akron Law Review: Vol. 6
, Article 2.
Available at: http://ideaexchange.uakron.edu/akronlawreview/vol6/iss2/2