Summary

Portrait of Earl Warren Earl Warren Hanna v. Plumer — Opinion of the Court

When a situation is covered by one of the Federal Rules, the question facing the court is a far cry from the typical, relatively unguided Erie Choice: the court has been instructed to apply the Federal Rule, and can refuse to do so only if the Advisory Committee, this Court, and Congress erred in their prima facie judgment that the Rule in question transgresses neither the terms of the Enabling Act nor constitutional restrictions.
Source: Wikisource

Portrait of Earl Warren Earl Warren Hanna v. Plumer — Opinion of the Court

We are reminded by the Erie opinion [14] that neither Congress nor the federal courts can, under the guise of formulating rules of decision for federal courts, fashion rules which are not supported by a grant of federal authority contained in Article I or some other section of the Constitution; in such areas state law must govern because there can be no other law.
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature