  Finally, the utilitarian case for open borders stresses that restricting freedom of movement leads to obvious inefficiencies and is therefore impermissible. There are any number of ways in which it is suboptimal to forcibly restrain people within territorial boundaries, but one of the most obvious worries is that it is economically inefficient. Restricting Mexicans from fully developing and capitalizing upon their talents in the United States economy, for instance, makes no more sense than relegating men and women into separate spheres. Just as a system in which only men may be doctors and only women may work as nurses unjustifiably deprives the world of countless excellent female doctors and male nurses, a geo-political system in which countries are entitled to exclude outsiders regrettably fails to capitalize upon the talents and work ethic of foreigners who are denied access to the world’s most robust labor markets. Given this, it seems reasonable to believe that people would on average be much better off if there were no restrictions on immigration.