04/03/1987
https://www.presidency.ucsb.edu...
"That's a matter for the sovereign state of Canada."
"Even more important, we've played a key role in the North Atlantic Treaty Organization, history's most successful alliance—a pact which has given us 40 years of European peace."
"The commercial interaction of our people, generally free from rancor and distrust, has been an unmatched blessing to our citizens."
"Protecting the environment, as one would expect when two countries share a 5,000-mile common border, is also a matter of great significance."