Who thought the constitution gave the federal government too much power

The Anti-Federalists had several complaints with the Constitution. One of their biggest was that the Constitution did not provide for a Bill of Rights protecting the people. They also thought the Constitution gave too much power to the federal government and too little to individual states. (found this on Google)

The Confederates (anti-Federalists)

Explanation:

Hence, they wrote the Confederate Constitution and would not accept the Federalist Constitution until the Bill of Rights was included