I understand that the common American people have no choice but trusting their system as being of peace, of humanitarian aids and alike.
But, year after year, most people outside America witnessed evidences by which they have gradually lost their trust in whatever comes, officially or scientifically, from the US System.
I mostly trust our system. However I trust few of the people who run for office. The strength of the American system is that power is not centralized in the hands of one person. Anyone who gets too outrageous can be brought down by the other branches.
I trust (for the most part) the FBI and CIA. I trust most of the departments because if they get too far out of bounds they can be chastised by Congress or the President or by the courts.
Look at President Trump's predicament. I don't know if he'll be impeached and convicted. I rather think not. I think he may resign in a year or so when the situation gets so hot he knows he can't win. The Justice Department and the courts are doing their business as they should; and no one, not even the President, is above the law.
For the most part too, our elections are far. There are problems, but for the most part, things go as they should. So if the Republicans mess up, they can get voted out. If the Democrats mess up, the same can happen to them. The fact that they criticize each other all the time also helps keep them fairly honest; and if people in one party mess up, people in the other party will jump on them.
Truth be said, I ceased to trust the US System after I personally discovered the biggest lie behind AIDS propaganda for which billions of dollars were invested, in all around the world and for many years, in order to present it as a natural disease/infection and to also relate it to sex.
I think I believe what you call a lie.
https://en.wikipedia.org/wiki/History_of_HIV/AIDS