Travis, Actually the Moslems can and do say they once owned parts of Spain and France. So that would be a similarity rather than a difference and a case you could have used to support the thesis of the article. However, the differences I mentioned seem cumulatively more important to me.
RKV, You identified the problem that the author of the article missed. The Dim multicultural policies are the problem. You should work to over turn them so that these good conservative Catholic immigrants become true Americans and support American values. We do need to control the borders so we know who is coming in, but we don't need to close the borders.
Spain yes (Al Andalus) but not France. They were chucked out of France on their backsides by Charles Martel.