It's not a bad proposal, though raising the salary requirements would be better. This essentially does that though since a company has to account for it in their hiring costs. IOW it costs the company $100K/year to hire a foreigner vs a local, which offsets the low salary that you might be offering that foreigner in order to "save costs" vs hiring local.
However, the unsolved problem is that this could just lead to more offshoring by these same tech companies who are abusing the program now. Not sure if there's any way to stop that.