Only about two months ago, Canada hit parity with the U.S. dollar for the first time in 31 years. Now many Canadians have had their fill: Companies ranging from jetmaker Bombardier Inc. to lumber producer Canfor Corp. say their currency’s strength is cutting into profits and jobs. “There is not much pride in declining business,” said Ken Lewenza, a Canadian Auto Workers union leader in Windsor, Ontario, where parts suppliers are closing operations and the casino just cut another 200 jobs. “The squeeze is on, and our lives are miserable.”