The US legal system isn't about 'right' vs 'wrong' they are about 'the rule of law', and the rule of law doesn't start or end with truth, justice, or the American way, only the rule of law.
The rule of law is a myth.
http://faculty.msb.edu/hasnasj/GTWebSite/MythWeb.htmThis raises an interesting question. If it has been known for 100 years that the law does not consist of a body of determinate rules, why is the belief that it does still so widespread? If four generations of jurisprudential scholars have shown that the rule of law is a myth, why does the concept still command such fervent commitment? The answer is implicit in the question itself, for the question recognizes that the rule of law is a myth and like all myths, it is designed to serve an emotive, rather than cognitive, function. The purpose of a myth is not to persuade one's reason, but to enlist one's emotions in support of an idea. And this is precisely the case for the myth of the rule of law; its purpose is to enlist the emotions of the public in support of society's political power structure.
People are more willing to support the exercise of authority over themselves when they believe it to be an objective, neutral feature of the natural world. This was the idea behind the concept of the divine right of kings. By making the king appear to be an integral part of God's plan for the world rather than an ordinary human being dominating his fellows by brute force, the public could be more easily persuaded to bow to his authority. However, when the doctrine of divine right became discredited, a replacement was needed to ensure that the public did not view political authority as merely the exercise of naked power. That replacement is the concept of the rule of law.
People who believe they live under "a government of laws and not people" tend to view their nation's legal system as objective and impartial. They tend to see the rules under which they must live not as expressions of human will, but as embodiments of neutral principles of justice, i.e., as natural features of the social world. Once they believe that they are being commanded by an impersonal law rather than other human beings, they view their obedience to political authority as a public-spirited acceptance of the requirements of social life rather than mere acquiescence to superior power. In this way, the concept of the rule of law functions much like the use of the passive voice by the politician who describes a delict on his or her part with the assertion "mistakes were made." It allows people to hide the agency of power behind a facade of words; to believe that it is the law which compels their compliance, not self-aggrandizing politicians, or highly capitalized special interests, or wealthy white Anglo-Saxon Protestant males, or _______________ (fill in your favorite culprit).
But the myth of the rule of law does more than render the people submissive to state authority; it also turns them into the state's accomplices in the exercise of its power. For people who would ordinarily consider it a great evil to deprive individuals of their rights or oppress politically powerless minority groups will respond with patriotic fervor when these same actions are described as upholding the rule of law.
Even the Bible says that it will fall without human hand. 
