Mexico has a long history of MJ use. . .hell even the word "marijuana" itself is a Mexican-spanish word.
So it seems pretty natural to me that the American state immediately adjacent to Mexico, one that was in fact
once part of Mexico, and that still has a significant Mexican-American presence and heritage would also have a big MJ presence in the State.
Anyway, TX is a pretty socially conservative state; despite the history above, I don't think MMJ has much traction there. Meanwhile, possession of small amounts of MJ by adults has been decriminalized in Mexico.
Anyway, if you're in TX and you're interested you can always join the movement and check in here:
http://texasnorml.org/