US Code - Chapter 41: Extortion and threats

Section 871 Threats against President and successors to the Presidency
Section 872 Extortion by officers or employees of the United States
Section 873 Blackmail
Section 874 Kickbacks from public works employees
Section 875 Interstate communications
Section 876 Mailing threatening communications
Section 877 Mailing threatening communications from foreign country
Section 878 Threats and extortion against foreign officials, official guests, or internationally protected persons
Section 879 Threats against former Presidents and certain other persons
Section 880 Receiving the proceeds of extortion

Importation, manufacture, distribution and storage of explosive materials

Crimes

Extortionate credit transactions