I don't believe that there is much of an arguement for allowing introduced species to go unattended. However, it is obvious that the media has blown the situation out of proportion. Will they spread across the U.S.? No. I do believe they are speading in south florida however. I Worked for the NPS at Big Cypress NP and have handled 1 road kill sub adult burm and have heard a first hand account of a wildlife biologist seeing one alive. This is proof that they are spreading north.