Many skeptics of immigration fear that it moves the country's political center of gravity leftward. This is usually in the context of immigrants voting disproportionately for Democrats, which they do because of their greater preference for left-of-center policies (as this exhaustive analysis of survey data shows).
Immigration also helps the Left by exacerbating social problems (such as the lack of health insurance or stagnating wages for less-skilled workers) that the Left then points to as the rationale for more statism. I discussed that here.)
But perhaps the most immediate political effect of immigration is on the apportionment of seats in the House of Representatives (and, therefore, of electoral votes). States with a disproportionate share of immigrants — most of them blue — have more political power in Washington than they would otherwise have without immigration.
Read the rest at National Review.