The Land Trust Alliance, originally formed in 1982 as the Land Trust Exchange, is a national conservation organization representing more than 1,700 land trusts across the United States. The organization describes its objectives as working to increase the pace and quality of conservation by advocating favorable tax policies, training land trusts in best practices, and working to ensure the permanence of conservation in the face of continuing threats. The Land Trust Alliance is based in Washington, DC. As of December 2010, national, regional and local land trusts have conserved a total of 47 million acres (190,000 km²) of land in America. The president of the Land Trust Alliance is Rand Wentworth. The Land Trust Alliance states its mission as "saving the places people love by strengthening land conservation across America."