Madison was also concerned with preventing a tyranny of the majority. The government needed to be neutral between the various factions or interest groups that divided society—creditors and debtors, rich and poor, or farmers, merchants and manufacturers. Madison believed that a single faction could more easily control the government within a state but would have a more difficult time dominating a national government comprising many different interest groups. The government could be designed to further insulate officeholders from the pressures of a majority faction. To protect both national authority and minority rights, Madison believed Congress should be granted veto power over state laws.