V (as described in such section 303(f)). (d) Rule of construction Nothing in this section shall be construed to limit or affect the authority of the Attorney General of the United States to add, remove, or transfer controlled substances to, from, or among the schedules under section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812(c) ), including controlled substances that have been added to a schedule pursuant to subsection (a).