21 U.S.C. 844(a)
First conviction: Up to one year imprisonment and fine of at least $1,000.
After one prior drug conviction: At least fifteen days in prison, not to exceed two years, and fine of at least $2,500.
After two or more prior drug convictions: At least ninety days in prison, not to exceed three years, and fine of at least $5,000.
21 U.S.C. §§ 853(a)(2) and 881(a)(7)
Forfeiture of personal and real property used to possess or to facilitate possession of a controlled substance if that offense is punishable by more than one year imprisonment.
21 U.S.C. § 881(a)(4)
Forfeiture of vehicles, boats, aircraft, or any other conveyance used to transport or conceal a controlled substance. [An automobile may be impounded in cases involving any controlled substance in any amount.]
21 U.S.C. § 844a
Any individual who knowingly possesses a controlled substance in a personal use amount shall be liable to the United States for a civil penalty in an amount not to exceed $10,000 for each such violation.
21 U.S.C. § 862
Denial of federal benefits, such as student loans, grants, contracts, and professional and commercial licenses, up to one year for first offense, up to five years for second and subsequent offenses.
18 U.S.C. 922(g)
Ineligibility to receive or purchase a firearm or ammunition.
Miscellaneous
Revocation of certain federal licenses and benefits, e.g., pilot licenses, public housing tenancy, are vested within the authorities of individual federal agencies. Violations of federal trafficking laws that involve either (1) distribution or possession of controlled substances at or near a school or University campus, or (2) distribution of controlled substances to persons under twenty-one (21) years of age, incur doubled penalties under federal law. (See chart: Federal Trafficking Penalties.)