The old American way of doing things came to an end with the 9/11 attacks. At that point, the national-security branch of the federal government adopted many of the same powers as the Chinese communist regime, and without any amendment to the Constitution.
We can start dismantling the US empire by giving Guantanamo Bay back to Cuba, followed by a termination of all foreign aid, a closure of all foreign military bases, and an end to regime-change operations around the world.
In every trade, a person is giving up something he values less for something he values more. Every time a shopper buys any item from another person, he has improved his standard of living, and so has the seller.