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