Metro is the regional government for the Oregon portion of the Portland metropolitan area, covering portions of Clackamas, Multnomah, and Washington Counties. It is the only directly elected regional government and metropolitan planning organization in the United States. Metro is responsible for overseeing the Portland region's solid waste system, general planning of land use and transportation, maintaining certain regional parks and natural areas, and operating the Oregon Zoo, Oregon Convention Center, Portland's Centers for the Arts, and the Portland Expo Center. It also distributes money from two voter-approved tax measures: one for homeless services and one for affordable housing. History and evolution Metro in its current form evolved from Columbia Region Association of Governments (CRAG) (1966–1978) and a predecessor Metropolitan Service District (MSD) (1957–1966). Measure 6, a 1978 statewide ballot measure established Metro, effective January 1, 1979. In 1992 voters approved a home-rule charter that identified Metro's primary mission as planning and policy making to preserve and enhance the quality of life and the environment, and changed the agency's name to Metro. This charter was amended in November 2000 when Ballot Measure 26-10 was passed by voters, although the principal changes did not take effect until January 2003. The measure eliminated the Executive Office and reorganized executive staff. The position of Executive Officer, elected by voters, was merged with that of council presiding officer, chosen annually by fellow Metro councilors, creating the position of Metro Council President. Metro's first president was David Bragdon, who served in the office from January 2003 until September 2010. Metro's scope has grown over time. It took over Glendoveer Golf Course, regional parks, pioneer cemeteries and the Expo Center from Multnomah County in 1994, and the City of Portland transferred management of its performing arts venues in 1989. In 2020, Metro placed a measure on the May ballot intended to raise $250 million for homeless services. It was approved and was enacted in January 2021. Under it, individuals with earnings of over $125,000 annually and couples with earnings over $200,000 are subject to 1% marginal income tax. Businesses with a gross revenue over $5 million are also subject to a 1% business tax. Areas of responsibility Regional Illegal Dumping Patrol Regional Illegal Dumping Patrol or RID Patrol cleans up illegal dumping and it is the designated contact for the public to report illegal dumping on public property, such as furniture, hazardous waste and construction debris.