Page:Mexico's dilemma.djvu/290

258 Art. 134. Bids shall be called for on all contracts which the Government may have occasion to enter into for the execution of any public works; these bids shall be submitted under seal and shall only be opened publicly.

Art. 135. The present Constitution may be added to or amended. No amendment or addition shall become part of the Constitution until agreed to by the Congress of the Union by a two-thirds vote of the members present and approved by a majority of the State legislatures. The Congress shall count the votes of the legislatures and make the declaration that the amendments or additions have been adopted.

Art. 136. This Constitution shall not lose its force and vigor, even though its observance be interrupted by rebellion. In case that through any public disturbance a Government contrary to the principles which it sanctions be established, its force shall be restored so soon as the people shall regain their liberty, and those who have participated in the Government emanating from the