Law enforcement agencies in the U.S. use AI-powered cameras to scan billions of vehicles each month, often without drivers ever realizing. Supporters say the technology is a tool for solving crimes. But critics warn it's creating a nationwide surveillance network, raising urgent questions about how much privacy Americans are willing to sacrifice in the name of safety. Paul Solman reports. #lawenforcement #cameras #surveillance #ai #artificialintelligence #crime #technology #safety #pbs #pbsnews #pbsnewshour #news