I disagree, it has been incremental. We have lower taxation of income today than at anytime since 1942, with the exception of 1986-93.
Your point is well taken
Another was the Great Depression and the New Deal. But we were still strong until about 1965.
But what is really destroying American isnt economic leftism, but cultural leftism. The USA today is more economically right wing than it has been since before WW2.
In Canada they are today the furthest to the right on economic issues they have ever been in their history. But on cultural issues they are Marxists who hate themselves and all of western civ.
What is destroying is cultural relativism, destruction of the family, normailzation of perversion, illegal immigration. none of which were supported by the old left pre-1965
It is not the Old Left that is a threat to Amerca, they really dont exist anymore. It is the New Left who are cultural Marxists
As I said, a bumpy ride, one that goes up and down, but given the unlimited access to our pockets the government has built into the constitution itself the rest of the constitution is naturally crumbling aside to accommodate it. Here is a document originally designed to limit government power that has been given free reign to take it all. This long string of horrible decisions from the Supreme Court, from the huge expansion of the commerce clause to its latest land grab spring from that common fountainhead. The Income tax amendment is a contraction to everything which was in the constitution beforehand and that contradiction is slowly going away as government naturally moves to take the power it now has a tap on
The culture , the schools , liberals, you name it, they are not the ultimate cause but merely the symptoms of the disease. The disease is unchecked state power and right now there is nothing to stop it, only to slow it down occasionally. It's like cancer really. If the body has no means to stop it, you die.