Which also doesn't exist. What does exist is a qualified worker shortage at low salaries.
A lot of the H1Bs are more skilled at resume stuffing than any actual technical skills.
This is as much a sweeping generalization as saying Americans are unqualified for tech jobs. There's an interview process for hiring H1Bs. So if you don't like their technical skills, you're free to not hire them.
and what exactly makes you say that? your own observation of a sample size 0 or 1?