It has been found that immigrants who come to the U.S. from nearby countries (such as Mexico or Canada) have a very high probability of returning to their countries of origin within a few years of coming to the U.S. On the other hand, immigrants from faraway lands have a very low probability of returning to their countries of origin soon after their arrival. Holding all other factors constant, which of these two groups of immigrants would you expect to have a steeper relationship between wages and age while in the U.S?