; and (2) any exceptions to this standard should be limited to extraordinary circumstances, such as asylum. 1906. Effective date The amendments made by sections 1903 and 1904 shall take effect on the date that is 180 days after the date of the enactment of this Act. XX Davis-Bacon Repeal 2001. Short title This title may be cited as the Davis-Bacon Repeal Act . 2002. Repeal of Davis-Bacon wage requirements (a) In general Subchapter IV of chapter 31 of title 40, United States Code, is repealed. (b) Reference Any reference in any law to a wage requirement of subchapter IV of chapter 31 of title 40, United States Code, shall after the date of the enactment of this Act be null and void. 2003. Effective date and limitation The amendment made by section 2002 shall take effect 30 days after the date of the enactment of this Act but shall not affect any contract in existence on such date of enactment or made pursuant to invitation for bids outstanding on such date of enactment. XXI Census Accuracy 2101. Short title This title may be cited as the Census Accuracy Act of 2020 . 2102. Citizenship or lawful presence status on census questionnaires Section 141 of title 13, United States Code, is amended— (1) by redesignating subsection (g) as subsection (h); and (2) by inserting after subsection (f) the following: (g) In conducting the 2020 decennial census and each decennial census thereafter, the Secretary shall include in any questionnaire distributed or otherwise used for the purpose of determining the total population by States— (1) a checkbox or other similar option for respondents to indicate whether the respondent is a citizen or national of the United States, is lawfully admitted for permanent residence in the United State, is an alien who otherwise has lawful status under the immigration laws, or none of these