United States. Presidents, State of the Union Addresses (1790-2006…
“ On the contrary, it would encourage Mexico to persevere and tend to protract it indefinitely. It is not to be expected that Mexico, after refusing to establish such a line as a permanent boundary when our victorious Army are in possession of her capital and in the heart of her country, would permit us to hold it without resistance. That she would continue the war, and in the most harassing and annoying forms, there can be no doubt. A border warfare of the most savage character, extending over a long line, would be unceasingly waged. ”
