It depends, if the bag says product of Mexico by the UPC stay away from it. If it say made in USA then go for it. The frontier USA in my opinion is a really good lump. I did by a bag of the Mexico frontier and it never made it out of my chimney starter, it smelled bad and had nails in it, I tossed the bag and chalked it up as a loss.
"Rural Route BBQ competition team"