S. 3908 seeks to restrict U.S. financial contributions to the United Nations, specifically concerning assistance related to Afghanistan. The bill prohibits these contributions until the Secretary of State verifies to Congress that no U.S. funds are involved in cash shipments...
Simple Explanation
The bill is like a rule that says the U.S. will not give money to the big group called the United Nations for help in Afghanistan until a top U.S. official checks and confirms that no bad guys are getting the money. If this official later finds out they made a mistake, they have to tell the U.S. government and stop the money again.