The bill says U.S. government agencies must buy computers and tech gadgets from the people who make them or their trusted sellers to keep them safe. Sometimes, they can make exceptions if it's for something very important or special.

The SAFE Supply Chains Act is like a rule that says the government should only buy computer and tech stuff from companies that made them or are allowed to sell them, making sure they’re safe and real. If a special reason comes up, like having to do important research, the government can make an exception, but they have to tell someone why they did it.

S. 4651 wants to make sure that when the government buys things like computers and phones, they get them from the people who actually make them or from stores that are allowed to sell them. This is to keep everything safe and secure, but they have to get permission if they need to buy from somewhere else for really important reasons.