Yes, and exploit those workers with lower salary than they deserve because those workers only have a small sliver of the job market available to them that their US Citizen competitors do.
The H-1B program is terrible for all employees and only benefits employers, which is why you see big corporations like Microsoft and Facebook pushing to remove caps on it. Not because they generous but because they would love to have more engineers who are underpaid and have a very hard time leaving the company for years until they can one day become citizens (and from what I understand the path to citizenship for an H-1B worker is not easy despite them being extremely productive and high contributing members of society.)