Republicans from energy-producing states are under pressure as the Senate weighs whether to overturn an Obama-era regulation to restrict harmful methane emissions escaping from oil and gas wells on public land.
A coalition of groups with ties to the fossil-fuel industry and the conservative Koch Brothers have waged a public campaign to overturn the Interior Department rule but have so far fallen short.
Senate Republican leaders say they are close to getting the 51 votes needed to overturn the rule under the Congressional Review Act. A vote is scheduled Wednesday even as key GOP senators remain publicly undecided.
Two Republican senators — South Carolina's Lindsey...