The organization that's considering legislation is the U.S. Senate.
The DEA can lobby for funding and capabilities and whatever they want, and the HHS and FDA can lobby for funding and capabilities and whatever they want too.
Why would the DEA lobby for health care-based treatments? They're in law enforcement. Also... https://www.dea.gov/what-we-do/education-and-prevention
Speaking of health care, the DEA would not go away if illicit drug addiction were solved. They are the ones who license physicians to prescribe medication. So are y'all advocating for OTC-everything, and no controlled substances? Like, propofol for all? Chemotherapy at your corner drugstore? Complimentary COVID vaccine with your Ben & Jerry's Ice Cream?