1) You don't see any difference at all between the 19th Century and the 21st Century? 2) Nonsense. There would be no such incentive for business to invest trillions into manufacturing that could be made worthless by the repeal of a tariff.
If we fund cutting the US corp tax rate to 0 by raising the import tariff to say 15-20% across the board they aren't going to reverse it. We spent $4.5 trillion at the federal level. Currently 10% of that is funded by US production, 89% by consumer taxes and deficit spending and 1% by foreign production. How does that make sense exactly?