Like I said I have yet to read Dogs so unsure what the stage is prior to Bear Head, Mexico isn’t specifically mentioned in BH as far as I recall. I don’t know if the timelines match up but with enough time between SP and Dogs they could have figured out the environmental collapse, if indeed the same world. I don’t expect it’s the same universe but there were definitely commonalities which made me question it. I do know AT quite often runs similar situations so similar characteristics, science and politics makes total sense. I actually wrote him an email asking about it. If he responds I’ll post it.