New Mexico Territorial Laws and Treaties NM TREATIES MEXICO PEACE TREATY, Art. 9

Mexicans who, in the territories aforesaid, shall not preserve the character of citizens of the Mexican republic, conformably with what is stipulated in the preceding article, shall be incorporated into the union of the United States, and be admitted at the proper time (to be judged of by the congress of the United States) to the enjoyment of all the rights of citizens of the United States, according to the principles of the constitution; and in the meantime shall be maintained and protected in the free enjoyment of their liberty and property, and secured in the free exercise of their religion without restriction.