I am not sure why you keep repeating the talking point that Americans don't want legal and skilled immigration anymore without any evidence to back up your claim because as Gallup poll [1] suggests that dissatisfaction with immigration levels (legal or illegal) was on a downward trend and hit an all-time low last year.
What your chart shows is that only 9% of Americans want to increase immigration levels, which would be both the actual and perceived effect of any effort to create a real permanent immigrant system for skilled workers.
What the chart reveals is that there's no general dislike for immigration and more specifically immigrants themselves as your previous comments might suggest.
[1]: https://news.gallup.com/poll/389708/dissatisfaction-immigrat...