Eight years later, in his final hours in office, Pres. John Tyler decided to write his own page in history by annexing the Texas republic, denying the honor to Jackson’s protégé, James K. Polk, who had won the White House on a pledge to bring Texas into the Union. An enraged Mexico now disputed the U.S. claim to all land north of the Rio Grande. To back up that claim, Polk sent Gen. Zachary Taylor to the north bank of the river. When Mexican soldiers crossed and fired on a U.S. patrol, spilling American blood on what Polk claimed was American soil, he demanded and got a swift congressional
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