> This is why one of the requirements is that you must have interviewed US persons first.

This is generally not a requirement for an H-1B. https://www.dol.gov/agencies/whd/fact-sheets/62o-h1b-recruit...

Reading through that I stand corrected. Thank you for sharing a link.

At the same time, if a US person applies and is similarly qualified, they must be offered the job.

Which is trivially abuseable by offering substantially less for the H-1B position. I'm not sure if there's an easy policy solution for that.