the trump administration took a major step toward changing the u.s. approach to fighting climate change. the president signed an executive order that rolls by environmental regulations ending a moratorium on coal mining on federal land. we have details. >> pmy administration is puttin an end to the war on coal. >> reporter: taking steps to strip down regulations to combat climate change. >> i am taking historic steps to lift the restrictions on american energy, to reverse government intrusion and to cancel job killing regulations. >> reporter: signing an executive order at the environmental protection agency that undoes the clean power plan. the initiative to curb carbon