A bill to amend certain provisions of the Act of May 27, 1970, to provide a procedure for determining whether a plan for the Federal Government to participate in an international exposition should include construction of a Federal pavilion, whether such Federal pavilion should be a permanent structure, and for other purposes.

Amends provisions regulating Federal involvement in international expositions to require the Secretary of Commerce to include in the plan for Federal participation in such an exposition: (1) the documentation of a Federal need for a permanent structure in the area of the exposition if such need exists; (2) a design for a Federal pavilion which meets the needs of Federal participation in the exposition and the need for a permanent structure; and (3) the Secretary's determination of whether the Federal Government should be deeded a site for such a pavilion as a condition of participation in the exposition. Directs the Secretary to design a temporary Federal pavilion if no design will satisfy the need for a permanent structure and the needs of Federal participation in the exposition.

Authorizes appropriations if Congress approves participation in such an exposition.