Senators David Vitter (R-LA) and Lamar Alexander (R-TN) sent a letter January 30 to Attorney General Eric Holder to clarify the Department of Justice’s policy for enforcing the Migratory Bird Treaty Act. The senators charge that the agency is singling out oil and gas producers in enforcing the law, while casting a blind eye toward renewable energy projects. The law makes it illegal to kill migratory birds, nests, or eggs.