It is 100% required for employment-based green card from a H1B. Anyone that has gone through this process knows this as their own job had to be posted to several job posting sites and each and ever candidate had to be reviewed and discounted in some ways (my company added crap to the posting such that it was simply impossible for someone to be as qualified for the job as me unless they sat next to me and did what I did for 5+ years…)

Yeah. To be clear I think it's fair to be critical of the current shape of the H-1B program (personally, I think the way it's used by outsourcing companies is pretty bad).

But there's a logical fallacy in these discussions in which people criticize the current H-1B program for not being compliant with some made-up version of what the H-1B program is. If you don't like the current program, the solution is not "we need to do what the law says" because in fact the current program is 100% compliant with the law. The solution is to change the law.