特斯拉和113家其他公司今年没有缴纳联邦所得税，但他们仍然不是联邦赤字最大的威胁，智库警告。

The effective corporate income tax rate is now the lowest it’s been in decades, and a tapering revenue source for the U.S. government is raising concerns among some policy experts. More than 700 profitable corporations paid 10.4% in current federal income taxes last year, according to a recent report from the Institute on Taxation and Economic Policy (ITEP), a progressive think tank—less than half of the 21% statutor

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