S. 313 aims to restrict how funds from the United States are given to the United Nations. Specifically, it blocks any voluntary or required contributions for aid in Afghanistan until the U.S. Secretary of State confirms that these funds are not used for cash shipments into...
Simple Explanation
The bill wants to make sure that money from the United States given to the United Nations isn't used in Afghanistan unless it's confirmed that the money isn't secretly being used in ways that help bad people. If someone finds out later that the money was used in a wrong way, they have to explain what happened to the big bosses in the government.