Economy Secretary Ildefonso Guajardo suggested in comments to the Televisa network that Mexico would be in a weak negotiating position unless it makes clear it won't accept just anything in order to preserve the three-nation trade pact. Guajardo said "it would be impossible to sell something here at home unless it has clear benefits for Mexico." "If we are going to go for something that is less than what we have, it makes no sense to stay," Guaja…