Except for the well-documented military interventions, government destabilizations, coup attempts, assassinations, bribes, blackmail, interference with foreign elections at the behest of corporate interests going back at least 5 decades, leading to the plundering of resources and the resultant mass poverty, starvation and genocide, no, the U.S., the wealthiest nation on the planet, has very little power. (im being sarcastic here)

At an individual level its true we are powerless, most of us are bitches to our corporate/government masters. As a collective nation we screw with the world in a royal sort of way.

We may not pay for child soldiers but we often build their guns.