Baltimore & Ohio R. Co. v. Kepner
In Baltimore & Ohio R. Co. v. Kepner, 314 U.S. 44 (1941), the Court, although denying the state court's power to issue an injunction in that case, said:
"The real contention of petitioner is that, despite the admitted venue, respondent is acting in a vexatious and inequitable manner in maintaining the federal court suit in a distant jurisdiction when a convenient and suitable forum is at respondent's doorstep. Under such circumstances, petitioner asserts power, abstractly speaking, in the Ohio court to prevent a resident under its jurisdiction from doing inequity. Such power does exist."
Mr. Justice Frankfurter, dissenting because of disagreement with the particular basis for the Court's refusal to give effect to the general principle, see infra, p. 418, observed that the opinion of the Court did "not deny the historic power of courts of equity to prevent a misuse of litigation by enjoining resort to vexatious and oppressive foreign suits," id., at 55, and that the decision did not "give new currency to the discredited notion that there is a general lack of power in the state courts to enjoin proceedings in federal courts," id., at 56.