President James K. Polk. Got to hand it to a guy who could drag his country to war with Mexico AND try to start one with Britain. But then again, the King or whatever sure as heck backed off when Polk ripped his shirt in half and started yelling, "Whatcha gonna do when Manifest Destiny runs all over you?!" And then he would run back and forth across the White House ring waving his hand in a circle and holding it to his ear and the country would be all like, "WOOO WOOOOOOOO!"
To a lesser degree in the north.
And then he suplexed Mexico and occupied Mexico City, and then BAM, 1-2-3, we got Texas and California. Ref raised Polk's arm, and Polk decided not to run for a second turn and laid down and died.