work is a commodity and it will flow worldwide to the lowest bidder.
Commodities flow to the highest bidder, but yeah, you are right, labor is a commodity. Governments regulate the snot out of ALL commodities, and labor is one of the most highly regulated commodities. All sorts of barriers to import and export of labor.
I just realized we may be saying the same thing, from opposite sides. I was viewing your remark from the point of view of the seller, and you may be speaking from the point of view of the buyer.