1. The 16th Amendment is one example of a part of the U.S. Constitution that increased the power of the federal government. The 16th Amendment allows for the collection on income taxes for all citizens by the federal government. This can be done without the consent of the states. They can use these funds as they see fit without any interference of the state government.
2. The 17th Amendment is an example of a part of the U.S. Constitution that increase d the powers of the individual states. The 17th Amendment states that the Senators must be elected by majority vote. Since the people in the states are the voters, the elected Senators are those who represent the states thereby giving additional power to the states. Senators must please those in the state that they represent in order to be re-elected.