FILE - In this Thursday, May 7, 2020, file photo, smoke rises from LG Polymers plant, the site of a chemical gas leakage, in Vishakhapatnam, India. The plastics factory in India where a chemical gas leak killed 12 people and sickened hundreds more last week lacked federal environmental clearance but had been issued state permits to operate anyway, exposing a potentially dangerous enforcement gap in the country's laws. The owner of the LG Polymers plant in Andhra Pradesh state, South Korean chemicals giant LG Chem, said in a May 2019 affidavit that formed part of an application for the clearance that the company "doesn't have a valid environmental clearance substantiating the produced quantity, issued by the competent authority, for continuing operations." (AP Photo/File)

FILE - In this Thursday, May 7, 2020, file photo, people affected by a chemical gas leak are carried in a truck for medical treatment in Vishakhapatnam, India. A plastics factory in India where a chemical gas leak killed 12 people and sickened hundreds more last week lacked federal environmental clearance but had been issued state permits to operate anyway, exposing a potentially dangerous enforcement gap in the country's laws. The owner of the LG Polymers plant in Andhra Pradesh state, South Korean chemicals giant LG Chem, said in a May 2019 affidavit that formed part of an application for the clearance that the company "doesn't have a valid environmental clearance substantiating the produced quantity, issued by the competent authority, for continuing operations." (AP Photo/File)