‘Sec. 2. Suppliers of wood pellets. The Maine State Housing Authority shall amend its rules governing the awarding of contracts to suppliers of wood pellets for purposes of carrying out its duties to receive, distribute and administer federal funds on behalf of the State for fuel assistance pursuant to the federal Low-income Home Energy Assistance Program administered through the United States Department of Health and Human Services to give preference to a supplier of wood pellets that is incorporated under the laws of, and has its principal place of business within, a state in the United States of America.’