In the future what is to stop a company under "free skies" from deadheading foreign pilots into the country to fly regionals in the US for less than half of what the regionals pay now?

I don't know the rules on foreigner wages but we have plenty of American pilots abroad since the pay is better in UAE and they don't pay US taxes. Why couldn't a foreign company get away with paying less? Even minimum wage based on the flight hour could be a lot of money in other countries. What is there under "free skies" to stop that from happening to us?

A Russian crew on 90 day rotations could get a lot of flying done. They could possibly work for a US airline under contract by a foreign company. We could have Chinese mechanics ect... Many airlines already farm out some heavy maintenance to Mexico. Why not bring the Mexicans here?

SkyHigh