The tariff acts of 1930 affected less than 5% of all goods imported to the United States. I don't see how that would cause the rich to spend less. In any event, I don't see the connection between the rich spending money and the poor being helped out by this.
What taxes were raised on the wealthy in 2007 and 2008? Certainly not income taxes, capital gains taxes or estate taxes. So which ones?
I'm more interested in your assertion that taxes trickle down and that poor people are harmed by taxes on the rich.
From 2007 to 2010 the threat of higher taxation on the rich coupled with , the Cap and Trade Bill that was being proposed from 2008 as President Obam took office taxes for the health care bill and the added cost to businesses has curtailed spending.
The rich pay higher taxes they increase the cost of doing business, the added cost of goods trickles down to everyone including the poor as cost go up wages stay the same the cost of living for everyone increases but pay stays the same. The cost for the taxes on then rich trickles down to the poor in higher goods for them. Lower taxes on the rich and business cost of goods decreases and the poor have more money themselves.
The more that the rich spend and the increase in sales means sales tax revenue and as businesses thrive more folks are hired as the workforce increases and wages increase then income tax revenues increase.