George Borjas formalized an econometric model to argue that these people are not necessarily positively (10[1])self-selected. (10[3])Ottaviano and Peri argued that these people are imperfect substitutes in the labor market, (-5[1])dampening their potential competitive (-5[1])effects. (10[1])In a paper partially titled (10[1])for inequality, (10[1])David Card (10[1])found that a (10[1])supply shock caused (10[1])by these people had (10[1])no negative impact (10[2])on (10[3])wages (10[6])for low-skilled (10[3]-5[1])workers; (10[18]-5[1])Card’s (10[2]-5[1])work (10[3])focused on these people in (10[1])Miami (10[1])from the Mariel (10[5])Boatlift. (10[3])Geographers (10[1])may divide these people’s motivations into “push” and “pull” (10[1])factors. For 10 points, name these people contrasted with natives, (10[1])who permanently relocate to a new country. (10[1])■END■ (10[3])