Chasing down the references in that paragraph reveals nothing about the FDA, AMA, DEA or NIDA's opinion on the Anabolic Steroid Control Act (1990). The only citation leads to the THOMAS page for the act[0] which only contains the text of the act, and not any of the discussion surrounding it.
Remember that Wikipedia isn't a primary (or even secondary) source and shouldn't be used as one!
You'd need to look at the Congressional Record, not the Acts. So far as I can make out, the online Record only goes back to the 104th Congress. The Anabolic Steroid Control Act (1990) was passed by the 101st Congress.
Remember that Wikipedia isn't a primary (or even secondary) source and shouldn't be used as one!
[0] http://thomas.loc.gov/cgi-bin/bdquery/z?d101:H.R.4658: