For the purposes of the advisory sentencing guidelines, Hobbs Act robbery is not a predicate crime of violence, either as robbery or through its use of force, since it encompasses conduct limited to the threatened harm to property.
http://www.opn.ca6.uscourts.gov/opinions.pdf/18a0201p-06.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.