Columbus didn't discover the USA he discovered a continent. Some of which became the USA and some of which became Canada. And Canadians refer to native Americans as indians too. I know this because I was in Canada in the early 90's when a tribe was in a state of major civil unrest (I believe on the NY/Quebec border) and the Canadian newsmedia didn't have some odd, confusing special name for them. So to say Machka is being disingenuous would be an understatement.