Senator Byron Dorgan, explaining why he opposes legislation to allow more legal immigration, said recently: "I don't think you need a professor to understand that when you import substantial cheap labor, it displaces American workers." The primary losers in this country are workers who do not have high school diplomas, particularly blacks and native-born Hispanics, according to George Borjas, a Harvard University economist who has studied immigration for years.

    美国参议员巴伦•道根最近解释了他为什么反对立法允许更多的合法移民进入美国 ......