S. 220 is a bill that aims to give Congress the exclusive authority to create or expand national monuments in the United States. The bill seeks to amend the existing Antiquities Act by requiring that such actions can only happen with explicit Congressional approval, thereby...
Simple Explanation
Congress wants to be the only one to have the power to make new special nature places called national monuments or make them bigger, instead of letting the President do it by themselves. This means it might take longer to make these decisions, but Congress wants to make sure they have a say in it.