How much did Abbot's stunt cost the rail industry? How much did it cost Mexico? What's the likelihood it happens again? How much would it cost to ensure there are better options?
Also worth noting that El Paso borders not just Mexico, it borders New Mexico as well. Hell, the metro area is in all three. So it wouldn't be that much of a stretch to say, you know, maybe we could build it so that it's close to the major industrial cities of Juarez and El Paso. And it' not that hard to imagine them saying, maybe we could do it on the new mexico side.
That makes even less sense though.
I believe there are six current railroad access points between Mexico and the U.S. One in California, one in Nogales, AZ, and four in Texas (Brownsville, Laredo, Eagle Pass and El Paso). I believe those six entry points are utilized by the Union Pacific and Kansas Southern railroads.
Why would any of them (or the federal government) build a second entry point on the west side of El Paso (in the New Mexico part, as you point out) when they've already got one in the Texas part of El Paso. You think Delta is going to push for and pay for a second international airport, this time in Hudson, Wisconsin?