Фото: Jonathan Ernst / Reuters
As for the national debt, the benefits of immigration are only likely to accrue with time. Later generations of immigrants tend to pay more in taxes as educational attainment and incomes rise, according to the Cato Institute’s report, which called children of immigrants “the most potent fiscal engine this country has ever seen.” Should Trump’s immigration crackdown cause a sustained decline in new entries, that engine will be much less powerful than it could have been.
，这一点在爱思助手下载最新版本中也有详细论述
Transform backpressure gaps。搜狗输入法下载对此有专业解读
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