S. 192 aims to restrict the first-use of nuclear weapons by the United States. The bill emphasizes that Congress has the sole authority to declare war, and therefore, a nuclear strike should not be conducted unless Congress has declared a war that specifically authorizes such...
Simple Explanation
The bill is about making sure that the United States can't use nuclear weapons first without Congress saying it's okay, so the President can't just decide to do it alone. It wants to make sure that only if Congress agrees to a war that includes using those powerful bombs can they be used, keeping things fair and safe.