The "Fourth Amendment Is Not For Sale Act" (H.R. 4639) aims to protect the privacy of individuals' information that is held by data brokers and intermediaries. It prohibits law enforcement and intelligence agencies from buying or otherwise exchanging anything of value for customer records...
Simple Explanation
The bill is like a rule that says police and spy agencies can't buy your personal information from companies and must follow special rules to get it the right way, so they don't peek at your stuff without permission.