A group of mostly Democratic lawmakers introduced legislation Tuesday to indefinitely block oil and natural gas drilling throughout the Arctic National Wildlife Refuge in Alaska.

The bill, which a similar group of lawmakers have introduced in previous sessions of Congress, would designate refuge's 1.5 million-acre coastal plain as wilderness, preventing drilling and most other development.

“The Arctic National Wildlife Refuge is a national treasure and it's more important than ever that we protect this uniquely American area,” Rep. Jared Huffman (D-Calif.) said in a statement. “Only by designating the threatened Coastal Plain as wilderness can we fully protect the intrinsic value that this land holds — for those who live in the region, and for future generations.”

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Huffman was joined on the bill by Reps. Brian Fitzpatrick (R-Pa.), Ruben Gallego (D-Ariz.) and Frank LoBiondo (R-N.J.).

The Senate version of the legislation, also introduced Tuesday, was led by Sens. Ed Markey Edward (Ed) John MarkeyMassachusetts town clerk resigns after delays to primary vote count Bogeymen of the far left deserve a place in any Biden administration Senate Democrats urge Amazon to recall, stop sales of explosive products MORE (D-Mass.) and Michael Bennet Michael Farrand BennetOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Next crisis, keep people working and give them raises MORE (D-Colo.) and was joined by 38 senators.

“The Arctic National Wildlife Refuge is one of the natural wonders of America, worthy of the highest level of protection as wilderness,” Markey said.

The legislation comes amid decades of heated debate over the refuge, located in the northeast corner of Alaska.

The refuge has been protected since Alaska became a state in 1959. But in 1980, Congress set aside the small coastal plain area for possible oil and natural gas drilling, subject to legislative approval.

Congress never gave that approval, although it tried repeatedly in the 1990s and 2000s, amid fierce opposition by environmentalists and strong support from the oil industry. The area is estimated to have 16 million barrels of recoverable crude oil.