> and the language will slowly decline. I wouldn't be so sure for that one, the thing is unlike German, there is a country with 120M of Spanish Speaking people

> and the language will slowly decline. I wouldn't be so sure for that one, the thing is unlike German, there is a country with 120M of Spanish Speaking people a few miles away, as Mexico's GDP keeps growing, US economy will become even more dependent of Mexico's trade. My point is people will get more proficient at Spanish over time, not less.