As for corruption, it exists in every country. America's is probably less bad than most.
A lot of uninformed people just make things up to suit their biases. For example, shiaben in the post above, could have consulted a world corruption index, before deciding to invent something. But that would conflict with already held biases. You are not likely to see shiaben come on here and rail about corruption in France.
In fact, if you lump together North America, Europe and Aus/NZ you can pretty much feel safe from corruption. Venture outside these areas and you had better watch your ass. These are just facts. Put another way - the Western World sets the standard for honesty.