Yes when.
You guys are the ones claiming it will work.
Show us the time in history when it worked?
Calvin Coolidge
He kept spending well below the government revenues.
He reduced taxes (except for the tariff).
Surtax on personal income was reduced and estate taxes ,gift taxes were abolished.
He kept reducing taxes,and the more that taxes were lowered, it provided more surplus.
These are his words;
"Four times we have made a drastic revisions of our internal revenue system, abolishing many taxes and substantially reducing almost all other. Each time the resulting stimulation to business has so increased taxable incomes and profits that a surplus has been produced".
He worked to reduce the role of government in the economy.
And he vetoed all of the subsidies bills.
We grew and thrived as a nation by those policies. A large portion of the poor rose to middle class and some of the middle class rose to the rich.