In March 1916, amidst civil war in Mexico, Poncho Villa and his raiders sacked and looted Columbus, New Mexico.

Then, in January 1917, because of World War I in Europe, Germany offered to help Mexico reconquer the American Southwest (TX, NM, AZ). British Intelligence intercepted the German coded message, and when it was revealed to the American public in late March, we declared war on Germany a few days later, in early April.

We see, therefore, that Mexico has long been aggressively interested in reconquering the lands it lost to America in the Mexican-American War (1846-48). Indeed, even folks in far-away Germany knew this 90 years ago.

As they say, "there's nothing new under the sun."