8 U.S. Code § 1377 - Collection of data on detained asylum seekers
(a) In general
The Attorney General shall regularly collect data on a nation-wide  basis with respect to asylum seekers in detention in the United States, including the following information:
(6) With respect to each facility where detainees are held, whether the facility is also used to detain criminals and whether any of the detainees are held in the same cells as criminals.
(8) The average length of detention and the number of detainees by category of the length of detention.
(9) The rate of release from detention of detainees for each district of the Immigration and Naturalization Service.
(b) Annual reports
Beginning October 1, 1999, and not later than October 1 of each year thereafter, the Attorney General shall submit to the Committee on the Judiciary of each House of Congress a report setting forth the data collected under subsection (a) of this section for the fiscal year ending September 30 of that year.
(c) Availability to public
Copies of the data collected under subsection (a) of this section shall be made available to members of the public upon request pursuant to such regulations as the Attorney General shall prescribe.
 So in original. Probably should be “nationwide”.
Source(Pub. L. 105–277, div. A, § 101(h) [title IX, § 903], Oct. 21, 1998, 112 Stat. 2681–480, 2681–541.)
Section was enacted as part of the Haitian Refugee Immigration Fairness Act of 1998, and also as part of the Treasury and General Government Appropriations Act, 1999, and the Omnibus Consolidated and Emergency Supplemental Appropriations Act, 1999, and not as part of the Immigration and Nationality Act which comprises this chapter.
Abolition of Immigration and Naturalization Service and Transfer of Functions
For abolition of Immigration and Naturalization Service, transfer of functions, and treatment of related references, see note set out under section 1551 of this title.