>If congress wants something regulated, they should pass a law and give guidance

I largely disagree. Congress did it's job in creating agencies and outlining their domain. I don't want a bunch of politicians creating regulation on drug approvals for instance, I want physicians and pharmacists doing that. I think the past few years have proven this, the supreme court, congress and executive fudging around with whether or not drugs are safe and efficacious has been a total shitshow.

Having professionals in their respective fields drive agencies is the only way you even come close to keeping up in the modern world. I cannot even imagine a world in which all agency policy shifts drastically every 2-4 years as different administrations come and go. That would absolutely wreck the US.