The fact is... nothing stay the same forever. That applies to the languages too.
There are many, many dead languages, but they were once as common as English is. We have to adapt to the changes. Lately, I have noticed that more and more people are complaining of the Spanish language taking over several places in the south of the USA due to the immigrants from Mexico. Even Taylor mentioned going into a resturant where everything was in Spanish except for the menu. Also, Spanish is now the second most common language in the USA.
According to the 2000 Census, 28,101,052 people in America speaks Spanish at home representing 10.7% of the population in the USA. 10.7% is not a small figure.
I wouldn't dare to make language laws if I were any of you. It's not needed because it is a natural trait in many civilizations to change languages over the years.