; and (2) shall be immune from any civil or criminal penalties related to perjury, false swearing, or false statements, for a failure to disclose such arrest, conviction, or adjudication. (d) Exception An individual who at sentencing received an aggravating role adjustment pursuant to United States Sentencing Guideline 3B1.1(a) in relation to a Federal cannabis offense conviction shall not be eligible for expungement of that Federal cannabis offense conviction under this section. (e) Definitions In this section: (1) The term Federal cannabis offense means an offense that is no longer punishable pursuant to this Act or the amendments made under this Act. (2) The term expunge means, with respect to an arrest, a conviction, or a juvenile delinquency adjudication, the removal of the record of such arrest, conviction, or adjudication from each official index or public record. (3) The term under a criminal justice sentence means, with respect to an individual, that the individual is serving a term of probation, parole, supervised release, imprisonment, official detention, pre-release custody, or work release, pursuant to a sentence or disposition of juvenile delinquency imposed on or after the effective date of the Controlled Substances Act (May 1, 1971). (f) Study The Comptroller General of the United States, in consultation with the Secretary of Health and Human Services, shall conduct a demographic study of individuals convicted of a Federal cannabis offense. Such study shall include information about the age, race, ethnicity, sex, and gender identity of those individuals, the type of community such users dwell in, and such other demographic information as the Comptroller General determines should be included. (g) Report Not later than 2 years after the date of the enactment of this Act, the Comptroller General of the United States shall report to Congress the results of the study conducted under subsection (f). 11. References in existing law to marijuana or marihuana Wherever, in the statutes of the United States