The urgency of the outsourced hire should require the employer to pay 2x the normal average wage for that position. At least we’d know then the hire would be for skill purposes and not for wage stabilization.
I don’t think employers have to pay FICA for foreign workers, since they are not eligible for SS/M. The employers also treat the H1B workers like indentured servants — salary, not hourly, and work them more hours than the would an American. They may not even have to provide the same fringe benefits — 401k matching, pensions contributions, health insurance, etc. They can also hire a senior person into an H1B slot where the the job title is “Jr xxxxx” which means a lower “average wage”.
All in, H1B workers might still be considered a “bargain” at 2x the “average” salary of American workers.
I would just make the H1B Visa Application Fee $100K/yr per worker.
What happens is the scab h-1b is paid a huge salary then is given a 3 month review were his salary is normalized and adjusted down.