Journal of the executive proceedings of the Senate of the United States of America, March 9, 1848:

"...Mr. Sevier submitted the following resolution for consideration:
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Resolved (two-thirds of the Senators present concurring), That the Senate advise and consent to the ratification of the treaty of peace, friendship, limits, and settlement between the United States of America and the Mexican Republic, concluded at Guadalupe Hidalgo on the 2d day of February, in the year 1848, with the following amendments:
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Insert in Article III, after the words "Mexican Republic," where they first occur, the words and the ratifications exchanged.
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Strike out the ninth article of the treaty and insert the following in lieu thereof:
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Article IX.--The Mexicans who in the territories aforesaid shall not preserve the character of citizens of the Mexican Republic, comformably 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 mean time 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.
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Strike out the tenth article of the treaty.
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Strike out of the eleventh article of the treaty the following words "nor to provide such Indians with fire arms or ammunition, by sale or otherwise." "

One must assume then, that the continued practice was allowed?