At the end of the bill it is proposed to add a new section. as follows: SEC. 16. (a) No visa shall be issued pursuant to this act. as amended. to any eligible displaced person at any time after 1 week immediately following the certification of a declaration. as provided In subsection (b) of this section stating that either (1) the total number of unemployed in the labor force in the United States exceeds 4.000.000 as estimated by the Secretary of Labor. or (2) the total number of married couples living doubled up in a household with another family exceeds 2.000.000 as estimated by the Administrator of the Housing and Home Finance Agency. (b) During the month next following the month in which this section is enacted. and each month thereafter until July 1951. the Secretary of Labor shall certify and make public a declaration setting forth his estimate of the total number of unemployed in the labor force in the United States. and the Administrator of the Housing and Home Finance Agency shall certify and make public a declaration setting forth his estimate of the total number of married couples living doubled up in a household with another family. The declaration so certified shall be published promptly in the Federal Register. (c) The term "another family" as used in this section means the head of a household whether or not related to either member of the married couple. The term "household" as used In this section means a house. an apartment. or other group of rooms. or a room that constitutes a dwelling unit.