2. Areas in which Congress has given the federal courts exclusive jurisdiction include, inter alia, certain securities-law class actions, 15 U.S.C. § 77p

(b) and (c); bankruptcy, 28 U.S.C. § 1334; patents and copyrights, 28 U.S.C. § 1338(a); actions against foreign consuls and vice-consuls, 28 U.S.C. § 1351; actions to recover a fine, penalty, or forfeiture under federal law, 28 U.S.C. § 1355; and actions involving certain seizures, 28 U.S.C. § 1356.

What303are the reasons for conferring exclusive jurisdiction on the federal courts, rather than making jurisdiction concurrent with that of the state courts? See Note,Exclusive Jurisdiction of the Federal Courts in Private Civil Actions, 70 Harv. L. Rev. 509 (1957).