Maryland Code, Commercial Law § 13-205

(a)(1) After obtaining the advice of the Consumer Council and holding a public hearing, the Division may adopt reasonable rules, regulations, and standards appropriate to effectuate the purposes of this subtitle, including rules, regulations, or standards which further define specific unfair or deceptive trade practices.

(2) These rules, regulations, and standards may not modify, expand or conflict with the definitions or standards set forth in this title.

(1) The reasons for adoption; and

(2) Any reasons against adoption which were rejected by the Division.

(d)(1) Any bona fide consumer group or trade association, the members of which are directly affected by a rule, regulation, or standard, has standing to challenge it in the name of the group or the association, even though the group or association may not be directly affected by the rule, regulation, or standard.

(2) A challenge to a rule, regulation, or standard shall be made in accordance with the Administrative Procedure Act.  1