This final rule would supplement a recent revision to regulations issued under the Packers and Stockyards Act (Act) (7 U.S.C. 181 229c) that provided criteria for the Secretary to consider when determining whether certain conduct or action by packers, swine contractors, or live poultry dealers is unduly or unreasonably or advantageous.  Supplemental amendments would clarify the conduct the Department considers unfair, preferential, unjustly discriminatory, or deceptive and a violation of sections 202(a) and (b) of the Act.  The rule would also clarify the criteria and types of conduct that would be considered unduly or unreasonably preferential, advantageous, prejudicial, or disadvantageous and violations of the Act, including retaliatory practices that interfere with lawful communications, assertion of rights, and associational participation.