Lobbying efforts are heating up ahead of next week's likely Senate vote on a resolution that would kill U.S. EPA's mercury and air toxics rule for power plants. Proponents of Sen. James Inhofe's (R-Okla.) resolution of disapproval, which is expected to come to the floor by June 18, are helping wrangle the 51 votes needed for Senate passage under the Congressional Review Act (CRA). The National Association of Manufacturers has made the issue a focus of its two-day lobbying summit this week, which spokesman Jeff Ostermayer said brought 400 manufacturers to Capitol Hill to meet with lawmakers. "We are meeting with senators, urging them to support the CRA," Ostermayer said.