What was a major obstacle to drafting a new constitution at the constitutional convention in 1787

A major obstacle to drafting the new constitution at the Constitutional Convention of 1787 was that the Anti-Federalist believed it would make the central government too powerful over the states, so they pressed for revisions (uch as the Bill of Rights that would ensure that this did not happen.

They were eliminating problems caused by industrialization, urbanization, immigration, and corruption in government