America is America. It's a capitalist system. They [leaders] have enshrined that belief that profit matters more than anything else. The polarization of the society is just the resurfacing of that.
Likewise the leader of any state has to do the same, he has to enforce Shariah firmly, for he will be held in account later in the afterlife if he fails.
Everything I have personally experienced, and that also has been expressed by the leaders of the great religions points to the fact that a global spirituality already exists and was intrinsically there from the start as God (by whatever name) is one and is indivisible - everywhere outside time and place.
I think you can grow your economy and at the same time do a better job of harnessing greenhouse gases. I don't think you can expect any American leader to wreck the economy, nor as an ally and a friend of America and a trading partner of America should you want us to wreck our economy.