Well I am mexican and those shale natural gas deposits most likely is on private land owned by mexican land owners. I already checked and found out that mexican government owns and will control resources under soil, but mexican land owner will have final say in allowing or not digging on his/her property after the company with a license to exploit the shale natural gas deposits offers money. So Mexican Land Owner has final say into whether allowing fracking or not on his/her property. Mexicans have winery, cattle ranching, tequila business on their land and I don’t think mexicans would want their properits and businesses destroyed.