Alaska, ANWR, Franklin Mountains, Brooks Range reflected in Schrader Lake. ((Photo by: Universal Images Group via Getty Images))ANCHORAGE, Alaska - The Trump administration on Monday took another step to opening Alaska’s Arctic National Wildlife Refuge to drilling for oil and gas, potentially fulfilling a decades-long dream for Republicans.Environmentalists, however, promised to fight opening up the coast plain of the refuge, a 1.56-million acre swath of land along Alaska’s northern Beaufort Sea coast, home to polar bears, caribous and other wildlife, after the Department of the Interior approved an oil and gas leasing program.Secretary of the Interior David Bernhardt signed the Record of Decision, which will determine a program for where.