tion of the Board with respect to such matter. Upon the filing of any such petition the district court shall have jurisdiction to grant such injunctive relief or temporary restraining order as it deems just and proper, notwithstanding any other provision of law.
Congress had determined that such preliminary relief may be critical to the effectuation of the purposes of the Act; traditional requirements for injunctive relief do not apply. Union de Tronquistas de Puerto Rico v. Arlook, 586 F.2d 872, 878 (1st Cir. 1978). The Regional Director must demonstrate (1) a reasonable cause to believe that an unfair labor practice has occurred, (2) legal theories to support the charge that are not “without substance”, and (3) that a temporary injunction would be “just and proper” in light of the Act’s purposes. Ar-look, supra, at 876. The ultimate factual resolution is for the Board, subject to review by the Court of Appeals. Hirsch v. Building & Constr., Trades Council of Phila. & Vic., 530 F.2d 298, 302 (3rd Cir. 1976); Douds v. International Brotherhood of Teamsters, 139 F.Supp. 702, 712 (S.D.N.Y. 1956). If this court is convinced that the theories advanced by the petitioner are wrong, it must deny injunctive relief. Danielson v. Joint Bd. of Coat, Suit & Allied Garment Wkrs. Union, 494 F.2d 1230 (2d Cir. 1974).
Issue Preclusion
Before deciding whether the grounds exist to issue an injunction, I must first determine the legal effect of two prior federal court decisions arising out of this same dispute. On February 15, 1980, Judge Black of the Southern District of Texas denied a § 10(1) petition sought by the Board to require ILA members in the port of Houston to load grain destined for the U.S.S.R. Baldovin v. Int’l Longshoremen’s Assoc., AFL-CIO, No. H-80-259 (S.D.Tex. Feb. 15, 1980). On March 4, 1980, Judge Edenfield of the Southern District of Georgia granted a § 10(1) petition covering the ports of Savannah and Brunswick. Mack v. Int’l Longshoremen’s Assoc., AFL-CIO, No. CV 480 -051 (S.D.Ga. Mar. 4, 1980). The parties here argue that I am bound under the doctrines of issue preclusion by one or the other of these decisions, choosing the opinion most favorable to their respective positions.
Under the judicially developed doctrine of res judicata, a final judgment “on the merits” bars a subsequent suit on the same cause of action by the same parties and their privies. Where the second suit between the same parties is upon a different cause of action, collateral estoppel precludes relitigation of issues actually litigated and determined in the prior suit. Lawlor v. National Screen Service, 349 U.S. 322, 326, 75 S.Ct. 865, 867, 99 L.Ed. 1122 (1955); Commissioner v. Sunnen, 333 U.S. 591, 597-8, 68 S.Ct. 715, 719, 92 L.Ed. 898 (1948). In Baldovin and Mack, as in the present case, the Board sought preliminary § 10(1) relief against the ILA and its locals. Although the different local unions may not be bound by decisions involving other ports, the Board might arguably have been es-topped from filing a § 10(1) petition against the ILA once Baldovin was decided. Judge Edenfield in Mack, noting that the conduct complained of occurred after that covered by Baldovin, declined to apply res judicata to the case before him, because “subsequent conduct, even if it is of the same nature as the conduct complained of in a prior lawsuit, may give rise to an entirely separate cause of action. Kilgoar v. Colbert County Board of Education, 578 F.2d 1033, 1035 (5th Cir. 1978).” Neither the case cited nor Judge Edenfield’s opinion sheds any light on why the principle of collateral estoppel would not apply to the separate cause of action.
The decision in Baldovin turned on the issue of jurisdiction of the NLRB. The court there decided that the controversy did not relate to “commerce” as defined in the NLRA, citing Windward Shipping (London) Ltd. v. American Radio Association, AFL-CIO, 415 U.S. 104, 94 S.Ct. 959, 39 L.Ed.2d 195 (1974) and American Radio Association, AFL-CIO v. Mobile Steamship Association, Inc., 419 U.S. 215, 95 S.Ct. 409, 42 L.Ed.2d 399 (1974). Apparently, the