I am surprised that people are realizing now that the US a hypocritical state. It uses freedom, democracy, human rights, women rights, etc to promote its own agenda.
As for the US contribution to the UNESCO, the US provides 22% of the UNESCO's budget of USD 300M. The US contribution around 66M. Many Arab and Muslim countries can can pay this amount without make a dent in their budgets(Any GCC country, Algeria, Libya, Turkey, Malaysia, Iran).