WINNIPEG – The Canadian dollar was showing strength on Tuesday morning, crossing the 73 United States cent mark. As of 8:37 a.m. CDT, the loonie was at US$0.7322 or US$1=C$1.3657, compared to US$0.7288 or US$1=C$1.3722 on Monday. On Wednesday, the Bank of Canada will announce its next increase of its key interest rate. The United