TITLE 13, CHAPTER 1, SUBCHAPTER I, Sec. 9.

Sec. 9. - Information as confidential; exception
(a)
Neither the Secretary, nor any other officer or employee of the Department of Commerce or
bureau or agency thereof, or local government census liaison, may, except as provided in section
8 or 16 or chapter 10 of this title or section 210 of the Departments of Commerce, Justice, and
State, the Judiciary, and Related Agencies Appropriations Act, 1998 or section 2(f) of the Census
of Agriculture Act of 1997 -

(1) use the information furnished under the provisions of this title for any purpose other than
the statistical purposes for which it is supplied; or
(2) make any publication whereby the data furnished by any particular establishment or
individual under this title can be identified; or
(3) permit anyone other than the sworn officers and employees of the Department or bureau or
agency thereof to examine the individual reports.

No department, bureau, agency, officer, or employee of the Government, except the
Secretary in carrying out the purposes of this title, shall require, for any reason, copies of
census reports which have been retained by any such establishment or individual. Copies of
census reports which have been so retained shall be immune from legal process, and shall not,
without the consent of the individual or establishment concerned, be admitted as evidence or
used for any purpose in any action, suit, or other judicial or administrative proceeding.

(b)
The provisions of subsection (a) of this section relating to the confidential treatment of
data for particular individuals and establishments, shall not apply to the censuses of
governments provided for by subchapter III of chapter 5 of this title, nor to interim current
data provided for by subchapter IV of chapter 5 of this title as to the subjects covered by
censuses of governments, with respect to any information obtained therefor that is compiled
from, or customarily provided in, public records.
 

For the full title see, http://uscode.house.gov/download/title_13.php.