US Presidency
1854

One of these, composed of foreigners, was at first countenanced and aided by the Mexican Government itself, it having been deceived as to their real object. The other, small in number, eluded the vigilance of the magistrates at San Francisco and succeeded in reaching the Mexican territories; but the effective measures taken by this Government compelled the abandonment of the undertaking. The commission to establish the new line between the United States and Mexico, according to the provisions of the treaty of the 30th of December last, has been organized, and the work is already commenced. Our treaties with the Argentine Confederation and with the Republics of Uruguay and Paraguay secure to us the free navigation of the river La Plata and some of its larger tributaries, but the same success has not attended our endeavors to open the Amazon.