I bet this is one of the more unpopular positions I have, and I doubt any immigration bill can pass without a requirement that new Americans learn English, but I promise you that this is a pointless idea.
Learning English is incredibly useful for navigating life in the United States so you’re basically going to see almost every new immigrant do it no matter what. People already have all the incentives they need to learn the language of power in this country. We don’t need to require them to do it.
The people who live here and don’t know English very well tend to be old people, and it’s not clear to me what is to be gained from making grandmas and grandpas learn a new language so far along in life.
The animating idea behind the politics of this issue seems to be that white supremacy over American culture needs to be chiseled into the law, which is obviously a disgusting premise, but it’s amazing how much overt racism you can get away with when you frame it as a debate over “language.”