The Retail Energy Supply Association advocates for consumer choice in 13 states and the District of Columbia, with representation of both large and small retail electricity and natural gas providers. As advocates for retail electric & gas restructuring issues that are presented by state public utility commissions, state legislatures & FERC, RESA members routinely meet with policy and decision makers. Each market has its own policy monitoring group for electric and/or natural gas issues, in which members elect a chair to spearhead efforts. The groups monitor policy developments related to electricity and natural gas retail competition, whether before state legislatures or regulatory commissions and administrative agencies. All RESA members operate collectively throughout the United States. However, the involvement of individual members is based upon their market representation. Some RESA members supply both electricity and natural gas, while others may supply one or the other. In addition, members may serve one or all customer segments (residential, commercial and industrial). Membership in policy monitoring groups varies according to the states in which each member operates.