46 U.S.C. § 41105: Concerted action

boycott or take any other concerted action resulting in an unreasonable refusal to deal; engage in conduct that unreasonably restricts the use of intermodal services or technological innovations; engage in any predatory practice designed to eliminate the participation, or deny the entry, in a particular trade of a common carrier not a member of the conference, a group of common carriers, an ocean tramp, or a bulk carrier; negotiate with a non-ocean carrier or group of non-ocean carriers (such as truck, rail, or air operators) on any matter relating to rates or services provided to ocean common carriers within the United States by those non-ocean carriers, unless the negotiations and any resulting agreements are not in violation of the antitrust laws and are consistent with the purposes of this part, except that this paragraph does not prohibit the setting and publishing of a joint through rate by a conference, joint venture, or association of ocean common carriers; negotiate with a tug or towing vessel service provider on any matter relating to rates or services provided within the United States by those tugs or towing vessels; with respect to a vessel operated by an ocean common carrier within the United States, negotiate for the purchase of certain covered services, unless the negotiations and any resulting agreements are not in violation of the antitrust laws and are consistent with the purposes of this part, except that this paragraph does not prohibit the setting and publishing of a joint through rate by a conference, joint venture, or association of ocean common carriers; deny in the export foreign commerce of the United States compensation to an ocean freight forwarder or limit that compensation to less than a reasonable amount; authorized by section 40303(d) of this title ; required by the law of the United States or the importing or exporting country; or agreed to by a shipper in a service contract; for service pursuant to a service contract, engage in any unjustly discriminatory practice in the matter of rates or charges with respect to any locality, port, or person due to the person’s status as a shippers’ association or ocean transportation intermediary; or for service pursuant to a service contract, give any undue or unreasonable preference or advantage or impose any undue or unreasonable prejudice or disadvantage with respect to any locality, port, or person due to the person’s status as a shippers’ association or ocean transportation intermediary.