It's all part of the United States getting in step with the way things are in the rest of the world. I don't imagine the linguistic diversification of the US will happen as quickly as the ethnic diversification has happened (non-whites now very close to outnumbering whites nationally), simply because English is establishing itself in so many parts of the world as the "global" language. Of course, this could change... remember that the global language was once the lingua Franca. That certainly didn't last... although there are still parts of Africa and the Caribbean where you're in deep merde if you don't speak French. I remember being in a shop in Switzerland about 25 years ago. I stood there and watched a young woman who was helping customers speak fluent English, French, German, and Italian, all in the span of about four minutes. And I thought about our reluctance as a culture to embrace multi-lingualism. I think there are a lot of things that contribute to this attitude, including xenophobia, arrogance and racism (often thinly disguised as "patriotism"). But I feel that this reluctance limits us. I can speak some Spanish, and at one time I was nearly fluent in Indonesian (very difficult to practice that skill in New England!). I believe these skills brought me closer to understanding things about people who are different from me. In the long run, it made them seem less different. In an ideal world, every American would spend a year abroad in a country where English is not commonly spoken. It's an enlightening experience... and also, frustratingly challenging and often embarrassing. It teaches humility. It certainly helped me get down off of John Wayne's high horse.