The US has an adversarial system.<p>- The prosecution, police and crime lab are solely focused on conviction, and<p>- the judge is like a referee, focused on procedure<p>It&#x27;s like &quot;trial by combat&quot; in Game of Thrones. Alternatives exist. Germany has an inquisitorial system where judges actively investigate the facts of the case.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Judiciary_of_Germany" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Judiciary_of_Germany</a><p>A little bonus crazy: in the US prosecutors have absolute immunity for anything they do during the prosecution.