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There are a couple of inaccuracies and some questionable information, but overall, this is a big problem nationwide.
Texas plants feral pigs all the time for hunting opportunity, I wouldn't be surprised if other places did it as well.
Texas, much like WA, has strict laws on transporting feral hogs.
They may hate pigs, but they love trophy hunters and the money they bring. …... TX will never not have a pig "problem." Way too much money in it.