'No, President Trump, The Income Tax Wasn't A Mistake. But It Was An Accident.'
"While instituting the largest tariff increase in modern history, Trump claimed that the income tax was passed for 'reasons unknown to mankind' and caused the Great Depression. Here’s the real history."
"In his Rose Garden speech launching a global trade war by announcing the most sweeping tariffs in modern history, President Donald Trump bestowed a history lesson on his audience that diverged from the factual record:"
“'Then in 1913, for reasons unknown to mankind, they established the income tax so that citizens, rather than foreign countries, would start paying the money necessary to run our government. Then in 1929, it all came to a very abrupt end with the Great Depression, and it would have never happened if they had stayed with the tariff policy; it would have been a much different story.'"
"So why did we institute an income tax? Were there any humans who knew what the reasoning was? And did the actions of 1913 lead to the Great Depression in 1929?"
https://talkingpointsmemo.com/news/no-president-trump-the-income-tax-wasnt-a-mistake-but-it-was-an-accident
(Long read, but a lot of good information about tariffs, taxes and American economic history.)