Since we're talking polling. American sentiment on immigration hasn't shifted much.
It's just that Americans want don't want increased immigration levels.
In your view, should immigration be kept at its present level, increased or decreased? On the whole, do you think immigration is a good thing or a bad thing for this country today?
news.gallup.com
No one wants open borders. Just like folks don't like open air drug markets and mass homelessness in the streets.
Leftist proposals gonna have to address that reality politically outside of just making "moral" arguments about why folks should just give it more time or their anecdotal experiences don't matter.