For example, according to the economic models, wages for native workers without high school diplomas may have fallen 5 percent over the last 15 years because of competition from immigrants.

• 比如，根据一经济模型，在过去15年里，仅有高中以下学历的美国本土工人的工资下降了5%25，其原因在于移民劳工造成的就业压力。