The term "crime of violence" means¬ó
(a) an offense that has as an element the use, attempted use, or threatened use of physical force against the person or property of another, or
(b) any other offense that is a felony and that, by its nature, involves a substantial risk that physical force against the person or property of another may be used in the course of committing the offense.
(Added Pub. L. 98-473, title II, Section 1001(a), Oct. 12, 1984, 98 Stat. 2136.)