US Presidency
1848

But this is a subject which more properly belongs to the legislative than the executive branch of the Government. The result of the whole is that Texas had asserted a right to that part of New Mexico east of the Rio Grande, which is believed, under the acts of Congress for the annexation and admission of Texas into the Union as a State, and under the constitution and laws of Texas, to be well founded; but this right had never been reduced to her actual possession and occupancy. The General Government, possessing exclusively the war-making power, had the right to take military possession of this disputed territory, and until the title to it was perfected by a treaty of peace it was their duty to hold it and to establish a temporary military government over it for the preservation of the conquest itself, the safety of our Army, and the security of the conquered inhabitants.