以史為鑒：現在基本上所有人都要交的Income Tax是1913年才有的。當初的口號就是對1%的富人加稅

根據wiki資料
https://en.wikipedia.org/wiki/Revenue_Act_of_1913#:~:text=The%20Revenue%20Act%20of%201913%20imposed%20a%20one%20percent%20tax,subject%20to%20the%20income%20tax.

開征時有3%的人要交income tax。當時的起征點是年收入3000美金，換算到現在大概是1M。現在呢，嗬嗬

https://www.pbs.org/newshour/economy/making-sense/the-income-tax-in-1913-a-way-to-soak-the-rich