The US Constitution is written and the constitutional law is placed above the ordinary laws. Interpreting the laws in the USA, the Supreme Court places the Constitutional Law above the ordinary law and overrules any legislation that, in its opinion, conflicts with the Constitution. This is the basis of judicial review. This has given rise to allegations of judicial indifference to public policy. However, the US judiciary has been found to be quite sensitive to public policy. The nominal and the real executive in the USA is the President, elected indirectly by the people. The legislative power in the USA is vested in the Congress.  President works with his team of secretaries and his decisions are subject to ratification by congress.  All the laws, which are enacted by the Congress should have assent of the President.   A salient feature of the US Constitution is its federal character.  In the United States of America sovereignty is divided between the Union and the States. The powers the Union are limited by the Constitution. The residual powers belong to the States. Being the guardian of the Constitution the Federal Supreme Court is also the guardian of the federal relations. The states have their awn courts.