<span>What was the principal effect of the decision on the operation of the national judiciary? The Judiciary Branch has taken sole role of being the 'interpreter of the constitution and laws. The courts now possessed the power to determine the validity of Congress’ laws and revoke them as they determined necessary. </span>
The two groups were the New england colonist and the British. The British wanted to stay in control of America and the taxes. The colonists wanted to make their own country(America) independent from the British king so he wouldn’t be the king.