Not according to the Left. CNBC:
US lost more tax revenue than any other developed country in 2018 due to Trump tax cuts, new report says
The U.S. tax-to-GDP ratio fell the most of any OECD member country in 2018, according to a new report released Thursday.
www.cnbc.com
Unknown. Most economists will say that tax cuts do not pay for themselves, but that is an opinion rather than fact. If the tax cuts had not be done, what would revenue have been? Nobody can know that, we can opine about that all day long, to no effect. Smaller slice of a bigger pie vs bigger slice of a smaller pie, which is/was best?