While the courts have allowed the influence of money in politics to go much too far, I doubt that the idea of rich people and businesses using their wealth to influence politicians is all that alien to non-Americans.
Also, bribery isn't really "super illegal" in America. Cases like McDonnell vs. US make it so that as long as you don't go "Thank you for the bag of money, which I hereby accept in exchange for granting you, in my official capacity, that government contract you wanted, which you would not have gotten otherwise," you're pretty much in the clear.