canceled.2021.1
#AMERICAISDEAD
That is not what the data from your links show. You are comparing the percent of federal income tax paid vs. all taxes paid. Since the discussion was about the effects of the federal income tax cuts, that is the only thing we should be comparing. Your link from ITEP shows federal, state, and local taxes.
The Tax Foundation link shows the top 1% paid 37.2% of all federal income taxes. It did not drop to 22.9% as your claim and that is not what your links show.
My source is the IRS/CBO data but I can using the data from the Tax Foundation link you provided.
Percent of Federal Income Taxes Paid (2016)
Top 1%: 37.3%
Top 5%: 58.2%
Top 10%: 69.4%
Top 50%: 97.1%
Top 25%: 85.9%
This percent has risen steadily (1986)
Top 1%: 25.8%
Top 10%: 54.7%
So, opposite from your claim, higher income groups have paid an increasing share of federal income taxes according to your link. I will comment on the tax rates separately.
https://taxfoundation.org/federal-income-tax-burden/
"As Top Marginal Rates Have Fallen, The Tax Burden on the Rich Has Risen"
https://taxfoundation.org/top-1-percent-tax-rates/
Leftists are stupid. They don't understand complex financial discussions