Some countries do it simply: You can hire from abroad if (a) you can demonstrate problems hiring in the local market for that position, and (b) the position is at/above market rates.

There's still room to game the system, but it's no longer a ridiculously low bar. And there is scope for investigations and legal action, which most companies try to avoid.

(Don't get me started on social insurances... the US super majority seems irrecoverably brainwashed, and would probably cheer on non-contributions by gainfully employed foreigners)