Having a camp-enclave in Mexico is not that farfetched. We had an AQ offshoot camp in remote Lake County Oregon in the early 2000s.
And this is a personal connection. A ring of several would-be terrorists were apprehended before staging an attack on Fort Dix NJ. They rented a house in a quaint little gated vacation community called Big Bass Lake in Gouldsboro, PA. They were practicing in the state park land nearby. Guess where I live? Big Bass Lake Community.
And I'm skeptical of Snopes.
From the link below.
"Snopes is run by a man and a woman with no background in investigation using Google. Snopes.com has been considered the 'tell-all final word' on any comment, claim and email. Once negative article by them and people point and say, "See, I told you it wasn't true!" But what is Snopes? What are their methods and training that gives them the authority to decide what is true and what is not? For several years people have tried to find out who exactly was behind the website Snopes.com. Only recently did they get to the bottom of it. Are you ready for this? It is run by a husband and wife team - that's right, no big office of investigators scouring public records in Washington, no researchers studying historical stacks in libraries, no team of lawyers reaching a consensus on current caselaw. No, Snopes.com is just a mom-and-pop operation that was started by two people who have absolutely no formal background or experience in investigative research."
Accuracy In Politics: Snopes Got Snoped