12/15/1843
https://www.presidency.ucsb.edu...
"I regard the question involved in these proceedings as one of vast magnitude."
"It is only after acquiring Texas, that the question of boundary can arise between the United States and Mexico."
"I feel it to be my duty to communicate, for your consideration, the rejected treaty."
"The great question is—not as to the manner in which it shall be done, but whether it shall be accomplished or not."