The Bureau of Industry and Security (BIS) is a division of the U.S. Department of Commerce. Its main job is to create rules about what stuff, technology, and services can be sent out of the United States to other countries.
BIS also oversees and makes sure people follow the Export Administration Regulations (EAR). These regulations control how goods, tech, and services are exported, reexported, or transferred from the U.S. to other countries.
It aims to keep sensitive technologies and items out of the hands of people who might harm the country while supporting American businesses in global trade.
BIS works closely with other U.S. government agencies, foreign governments, industry associations, and international organisations to ensure effective export control measures while promoting legitimate trade and technological innovation.