The budget resolution approved by the Senate Budget Committee includes a provision opening the Arctic National Wildlife Refuge (ANWR) to oil exploration, promising to set up a showdown on the floor next week. The provision is contentious because it would protect the provision from filibuster. A letter of objection was signed by prominent Republican Senators including Sens. Lincoln Chafee (R-RI) Norm Coleman (R-MN), Susan Collins (R-ME), John McCain (R-AZ), and Olympia J. Snowe (R-ME), saying: Congress should not be making environmental and energy policy decisions of this magnitude on the budget bill. Two dozen GOP House members have signed a similar letter opposing the inclusion of ANWR drilling in the budget resolution.