Do immigrants screened for skills do better than family reunification immigrants?

"It is sometimes thought that immigrants [to the United States] who are screened for occupational skills are likely to become more productive Americans than immigrants who gain admission on the basis of family ties to native-born U.S. citizens or to previous immigrants. However, the expected differential may be small or nonexistent because: 1) kinship immigrants have access to family networks; 2) whereas employers may screen for short-term productivity, family members may screen for long-term productivity; and 3) native-born U.S citizens who sponsor spouses may be particularly adept at screening for long-term success. Longitudinal data on the 1977 immigrant cohort is used to compare initial and longer-term occupational outcomes among employment and kinship immigrants. Results indicate a narrowing of the differential, due both to higher rates of occupational downgrading among employment immigrants and of occupational upgrading among kinship immigrants."