Bilingualism is a big deal because it can cause big problems. And it may be possible to prevent those problems today, but it may not be possible in 10 years.
(A rough analogy is global warming. Some people think it’s a big problem, some people don’t. And those who do think it is a problem are in a state of panic, because they really believe the world is in danger. While others watch calmly, unworried, saying everything worked out fine in the past, so this too will pass. )
So what kind of “problems” are we talking about?
Well, look at Canada. The French and English speakers in Ontario hate each other. They have separate cultures, separate political parties and have twice tried (and very nearly succeeded ) to destroy the united nation of Canada by splitting it into two separate countries.
It is not unreasonable for Americans to want to prevent problems like Ontario, before it is too late
A nation needs a common, shared culture. And language is a big part of defining culture.
America has a wonderful history of successfully absorbing all the previous waves of immigration. But that is not relevant to today’s problem. The previous waves of newcomers were just that–waves. Each one crested, and then subsided. The current immigration is not a wave–it is an inundation. And some people are afraid of drowning as the water level rises.
It was ugly racism to hate the Irish, the Italians, the Poles, the Jews, etc who
obeyed the law when they stood in line for the border patrol at Ellis Island, and then proudly used their newly learned English in public, no matter what language they spoke at home.
It is not racism to expect that today’s newcomers do the same thing my grandparents did.
Yep–my grandparents lived in an enclave where there was little English spoken in the local shops. But the enclave was clearly defined by certain streets , and outside of that enclave, they never expected to find a job unless they spoke English.
(and please don’t accuse me of jingoism. I have lived on 3 continents, and speak 2 languages. But when moving to a new country, I have never demanded that the native residents adapt to my culture.)