To make additional funds available to the Secretary of Commerce for purposes of the 2000 decennial census, and for other purposes.

Appropriates additional funds for FY 2000 for necessary expenses to conduct the 2000 decennial census. Conditions the availability of such funds for obligation or expenditure on the Secretary of Commerce first submitting to Congress a written determination that: (1) those funds are necessary to obtain an accurate and timely 2000 decennial census; and (2) sufficient funds are not otherwise available for the purposes involved.

Permits a member of the uniformed services to be appointed to and compensated for service in a 2000 census position without regard to the member's duty status, including status on active duty. Provides that such an appointment shall not affect the member's uniformed service status or pay and allowances.

Prohibits taking into account the acceptance of an appointment to a 2000 census position for purposes of applying requirements pertaining to the repayment of a voluntary separation incentive payment by reason of an individual's accepting subsequent reemployment with the Government or any other similar provision of law, rule, or regulation.

Prohibits the earning or receipt of compensation for service performed by an individual in a 2000 census position from causing: (1) any individual to become ineligible for any benefits provided under any Federal program or any State, or local program financed with Federal funds; or (2) a reduction in the amount of any such benefits. Declares that nothing in such provision shall be considered to apply with respect to the Internal Revenue Code of 1986.