The US ratified and abided by the Montreal Protocol because it was based on hard verifiable science. The danger of thining the ozone layer was clear and the dangerous compounds were identified and banned. There were no questions about what should be done after the science was established.
______________________________
To the Senate of the United States:
I transmit herewith, for the advice and consent of the Senate to ratification, the Montreal Protocol on Substances that Deplete the Ozone Layer, done at Montreal on September 16, 1987. The report of the Department of State is also enclosed for the information of the Senate.
The Montreal Protocol provides for internationally coordinated control of ozone-depleting substances in order to protect public health and the environment from potential adverse effects of depletion of stratospheric ozone. The Protocol was negotiated under the auspices of the United Nations Environment Program, pursuant to the Vienna Convention for the Protection of the Ozone Layer, which was ratified by the United States in August 1986.
In this historic agreement, the international community undertakes cooperative measures to protect a vital global resource. The United States played a leading role in the negotiation of the Protocol. United States ratification is necessary for entry into force and effective implementation of the Protocol. Early ratification by the United States will encourage similar action by other nations whose participation is also essential.
I recommend that the Senate give early and favorable consideration to the Protocol and give its advice and consent to ratification.
Ronald Reagan
The White House
December 21, 1987
-------------------------
The true cause of global warming or even if the earth is truly warming is not known. It is as plausible that it is a natural cycle as it is that man has anything to do with it. The earth's history is not one of a stable climate.
Throw out all the links you want to, I've researched this to my satisfaction and have probably already seen them.