The US Congress consists of 2 houses. The <em>House of Representatives</em>, with its 435 members and <em>The Senate</em>, with its 100 members.
In a decision-making process, it is always better to have more participants that could help come up with a better proposal or solution to a certain issue. When it comes to policymaking, having an organized group of individuals who will debate over the country's matters will offer you a greater probability of coming up with better policies in comparison to one single person. The President does have a group of advisors but in the end, it is only he or she which has the last word.
The Supreme Court has the power of <em>Judicial Review</em>. This means that it can invalidate a law that is passed by a Congress by the argument that it goes against a part of The Constitution. It can also invalidate an executive act from the President by considering it to be unlawful.
There are 9 justices. The number of justices that need to participate is at least 6.
Ponce de Leon searched for it
In September 1786, delegates from five states met at what became known as the Annapolis Convention to discuss the need for reversing the protectionist interstate trade barriers that each state had erected. At its conclusion, delegates voted to invite all states to a larger convention to be held in Philadelphiain 1787. The Confederation Congress later endorsed this convention "for the sole and ex…
Hoped that helped :P
The Magna Carta served as a model for the US constitution.