“Page 35: The quota laws [that maintained existing ethnic proportions] of the 1920s, however, had themselves been reform achievements, supported by a broad coalition that included middle-class “Progressives” (both Republicans and Democrats), organized labor, and the most prominent African-American leaders of the day. Immigration restrictionists from the left side of the political spectrum included leaders of organized labor, prominent spokesmen for black Americans, social justice Progressives, and conservationists. They argued that uncontrolled immigration, encouraged by industrial employers seeking docile low-wage workers, flooded the national labor pool, depressed wages, worsened working conditions and tenement housing, weakened organized labor, provided the basis for the corrupt city political machines, and threatened overpopulation.” ImmigrationMulticulturalismEthnic Conflict Book:Collision Course: The Strange Convergence of Affirmative Action and Immigration Policy in America Source: Collision Course: The Strange Convergence of Affirmative Action and Immigration Policy in America