The Air Quality Agreement is an

environmental treaty An international environmental agreement or sometimes environmental protocol, is a type of treaty binding in international law, allowing them to reach an environmental goal. In other words, it is "an intergovernmental document intended as legall ...

between Canada and the United States. It was signed on 13 March 1991 by Canadian prime minister

Brian Mulroney Martin Brian Mulroney ( ; born March 20, 1939) is a Canadian lawyer, businessman, and politician who served as the 18th prime minister of Canada from 1984 to 1993. Born in the eastern Quebec city of Baie-Comeau, Mulroney studied political sci ...

and American President

George H. W. Bush George Herbert Walker BushSince around 2000, he has been usually called George H. W. Bush, Bush Senior, Bush 41 or Bush the Elder to distinguish him from his eldest son, George W. Bush, who served as the 43rd president from 2001 to 2009; pr ...

and entered into force immediately. It was popularly referred to during its negotiations as the "Acid Rain Treaty", especially in Canada. Negotiations began in 1986 when Mulroney first discussed the issue with then-president Reagan. Mulroney repeatedly pressed the issue in public meetings with Reagan in 1987 and 1988

References

{{DEFAULTSORT:U.S.-Canada Air Quality Agreement Canada–United States treaties Environmental treaties Treaties concluded in 1991 Treaties entered into force in 1991 1991 in the environment Air pollution in Canada Air pollution in the United States Air pollution control systems 1991 in Canadian law 1991 in American law Canada–United States relations Transboundary environmental issues