46 U.S.C. § 41106

(1)

agree with another marine terminal operator or with a common carrier to boycott, or unreasonably discriminate in the provision of terminal services to, a common carrier or ocean tramp;

(2)

give any undue or unreasonable preference or advantage or impose any undue or unreasonable prejudice or disadvantage with respect to any person; or

(3)

unreasonably refuse to deal or negotiate.