US inflexibility diminishes its leadership role in the world body.  The potential exists for the United States to appear as a bully to the other UN member states by demanding the institution bend to its will or lose support. An appropriate analogy can be found in a country's taxation policy. Individuals cannot simply withhold their taxes because they disagree with a government's policies. That usually lands them in jail. The US faces no such threat for non-compliance and thus makes a show of its leverage over the UN. Such an attitude potentially undermines the desire of other nations to be receptive to serious US needs, resolutions and reforms.  The US therefore needs to be very careful when exercising its power in the UN and deciding how much money to set apart; otherwise countries may start to question the role and importance of such a big international organization.