Mc Culloh vs Mary land is the most important supreme court case about federal power. The cause for the case was that when Maryland placed a prohibitive tax on the banknotes of the second bank of the United States, the Maryland court upheld this law. The bank later appealed to the supreme court. The case was argued by Daniel Webster and others on behalf of the bank. The opinion of the court was written by chief justice John Marshall. He said that Congress gave the congress the powers to make laws for carrying out the specific powers which were conferred by the congress in section eight of Article first of the constitution. It empowered the federal government.
Because the King of Great Britain was making them pay more taxes and and the Colonies was not making enough money to pay the taxes and the Colonies wanted to know what the king did with the money.