(1) Is substantive reliability required under the due process clause of the Fifth Amendment to the Constitution of the United States when a district court relies on hearsay statements to enhance a person's sentencing Guideline range.

(2) Is aiding and abetting Hobbs Act robbery, 18 U.S.C. § 1951, a "crime of violence," 18 U.S.C. § 924(c) meaning that it "has as an element the use, attempted use, or threatened use of physical force against the person or property of another," id. 18 U.S.C. § 924(c)(3)(A).

Is substantive reliability required under the due process clause when a district court relies on hearsay statements to enhance a person's sentencing Guideline range?