I have worked at Apple for a decade, H1B's absolutely do get paid less. We have many H1B's that literally just sit around and push buttons and file bug reports, and barely know how to code. Some of them can't code at all. Ofc some of them are good engineers, but they are not even in the majority.

There is plenty of data to back this up.

>A total of 60% of all H-1B jobs are assigned wage levels that are well below the local median wage.

https://www.epi.org/press/a-majority-of-migrant-workers-empl...