That battle over the Texas-New Mexico boundary line We all know that the Rio Grande separates the United States from Mexico, the river in itself permanently marking the international boundary between two great nations. But what many of us do not understand, or stop to think about, is that two or three miles of that river, right here where we live, also separates West Texas from New Mexico. In other words, a brief portion of that Rio Grande marks a "two-state" boundary. But the issue never entered into controversy until New Mexico was admitted to the Union in 1912. Then, in 1913, the State of New Mexico, in the Supreme Court of the United States, filed a lawsuit against the State of Texas involving the rightful location of the Texas-New Mexico boundary beginning at a point somewhat west of Anthony and encompassing a distance of roughly 20 miles. And complicating all this was the issue of where, exactly, was the river supposed to flow? New Mexico stated that it originally flowed farther east, whereas Texas argued that it had originally flowed farther west, therefore the valley differences, as argued between the two parties, amounted to approximately four miles. And to complicate matters even more, the Upper Valley land showed centuries of scars, the land displaying evidence of several centuries-old, abandoned river- beds....