Even if someone has 10 PhDs if they still harbor hatred towards the US and Americans they shouldn’t be allowed into the US.
And in the case of most immigrants today, they all hate Americans, secretly. They are here to steal our industries and jobs and move them all back to their home countries.
That and bilk us out of billions in remittances.
There is no “merit-based” system of immigration which can be policed well enough to benefit the US.
It’s all a smokescreen to keep the cheap labor pipeline open.