Negative net migration hasn’t definitively happened in the U.S. for almost a century, not since the Great Depression. The U.S. native-born population is also in free fall, well below the replacement rate needed to maintain population numbers in the long run. With fewer immigrant arrivals already dealing a blow to the workforce, the shrinkage of the American taxpayer base is set to further widen the country’s deficit and hurt its prospects for economic growth.
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每年冬天工廠的天然氣供應會被切斷數日甚至數週；天氣較熱時則面臨停電。大城市的居民也經常得忍受住宅停電或飲用水遭到中斷。