You’d Be Able to See Your Private Data
Granted, in the wake of the GDPR, most websites have had to adapt to the times with privacy policy disclosures and other compliance systems. But there are still shadowy markets in the U.S. in which entities can buy and sell a user’s data largely without their knowledge.
Only occasionally are these markets exposed, but with a federal privacy law, there will likely be less chance for them to exist undisclosed. Similarly, if a data breach occurs, a federal law could require a uniform approach for companies to notify their users in a prompt manner.