(Black, J., concurring)). We are also troubled because, given that there was nothing about the officers’ appearance or conduct that revealed that they were engaged in the performance of their duties, Davis lacked fair notice that mere spoken words, which did not disturb the peace, could nonetheless constitute the crime of obstructing the officer’s performance of duty. See Cantwell, 310 U.S. at 311, 60 S.Ct. at 906. “It is an elemental requirement of our constitutional jurisprudence that laws be reasonably intelligible, providing citizens with fair notice as to what conduct is legal and what conduct is illegal.” Rodney A. Smolla, Smolla and Nimmer on Freedom of Speech § 6:13 (1996) (citing Papachristou v. City of Jacksonville, 405 U.S. 156, 162, 92 S.Ct. 839, 843, 31 L.Ed.2d 110 (1972) (<HOLDING>)). We reiterate that we recognize the need to
holding where plan language can be interpreted both to grant discretion and not to grant discretion plan does not unambiguously grant discretion recognizing the medicare statutes broad delegation of authority holding unconstitutional vagrancy statutes that were purposely designed to grant police broad discretion holding unconstitutional ordinance that gave executive director excessive discretion in deciding whether the grant of a permit would be detrimental to the public holding that district courts discretion is extremely broad