The FDA doesn't have jurisdiction over "many things".
I personally think the FDA shouldn't exist, or should not have power to regulate (and should be a toothless advisory/certification authority). That said, if they are to exist, they should do their job. They're not. We're paying the bill but not getting the service.
Same goes with OSHA. Every casino in Las Vegas demands their employees work in rooms filled with tobacco smoke. Why? Money. It's pure corruption.
We have the rules, they're just not enforced, because if you have enough cash flow, you get a special carve-out so that the rules that apply to everyone else don't apply to you.
Big Tobacco gets it from the FDA. Big Telecom gets it from the FCC. Boeing gets it from the FAA. It's everywhere, and once you see it, you can't unsee it. We're paying billions and billions for these huge bureaucracies and they're only pretending to provide us with the service they exist to provide.