No ban on SARMS has occurred as of yet. And most likely will not occur anytime soon.
Companies selling SARMS were technically doing some Illegally, because all SARMS have
patents on them, and are currently or previously being researched by the patent holders
to make it thru FDA Approval for human consumption thru Doctor Prescription.
Many companies have received cease and desist letters telling them to stop production
A few companies were also sued by another supplement company that has no interest in SARMS,
but took these companies selling SARMS to court trying to get them into trouble.