The US century is now getting stronger, not weaker.
Evidence to the contrary:
1) We have no central basis for governance. Once the Constitution is abandoned, we have no core doctrine. It's all up for grabs, the whims of rulers.
2) The widening wealth gap is creating growing instability in society. We are more likely to experience a civil war than at any time previous, including the 60's.
3) Our military-industrial complex is covering up growing decay. Federal contracts are getting behind and there is a skill drain and an etthics decline, resulting in fraud.
4) The US has failed to counter the Belt & Road Initiative effectively. While China spends major capital on infrastructure the world over, the US flounders with too-little-too-late with domestic infrastructure and does very little for its allies and weak dependents. Cutting USAID marks a fatal abandonment of soft power.
5) America has refused to create an immigration policy that is honest. For decades, there has been a nod & wink to employers using underpaid foreign labor, enabling the employer to underpay wages, underpay taxes, and keep working class people in relative poverty, all the while complaininig that this labor base consumes too much public assistance. With the war on immigrants, there is no attempt to address where farm labor, physical labor, and menial labor will be sourced. The
majority of Americans have grown lazy, unwilling to work for their crust of bread. Without that labor, and a living minimum wage, the nation will continue to become an even bigger shithole.
6) The moral fiber is rotting. Religion is prostituting itself, selling virtue in exchange for greed and power, and the greed for power. Other forms of ethics or morality lack recognition and authority. Law enforcement itself is corrupted with attitudes of negligence and tolernace of non-violent crime, eating away the very concept of law.
7) Repeated recent betrayals of allies has seen American influence wane justly. Before NATO and Ukraine, before Canada and Mexico, there was our fiasco with Afghanistan, our support of Israel's war crimes, our denial of climate change as a product of human actions, and our eagerness to export pollution via third world contractors. These are not the signs of national strength, but corruption.
8) The elevation of criminality, openly, unhidden, is a bright red flag to real democracies that we are past prime. Our fruit has rotted on the tree. The instant we suffered the Insurrection and then GOP went crawling back to Trump when they could have severed ties, proves the power is no longer in the authorized institutions, but kingmakers outside the legal channels. We are no longer a state with the rule of law as our core value.