is expected to be completed in 2027. The U.S. Open tennis tournament has been played since 1978 at the USTA Billie Jean King National Tennis Center, located just south of Citi Field. With a capacity of 23,771, Arthur Ashe Stadium is the biggest tennis stadium in the world. The U.S. .Open was formerly played at the West Side Tennis Club in Forest Hills. South Ozone Park is the home of Aqueduct Racetrack, operated by the New York Racing Association and offers Thoroughbred horse-racing from late October/early November through April. Belmont Park Racetrack is mostly in Nassau County; however, a section of the property, including the Belmont Park station on the Long Island Rail Road, is in Queens. [[UBS Arena], home of the National Hockey League's New York Islanders, sits in Nassau County adjacent to the racetrack. Government Since New York City's consolidation in 1898, Queens has been governed by the New York City Charter that provides for a strong mayor–council system. The centralized New York City government is responsible for public education, correctional institutions, public safety, recreational facilities, sanitation, water supply, and welfare services in Queens. The Queens Library is governed by a 19-member Board of Trustees, appointed by the Mayor of New York City and the Borough President of Queens. Since 1990 the Borough President has acted as an advocate for the borough at the mayoral agencies, the City Council, the New York state government, and corporations. Queens' Borough President is Donovan Richards, elected in November 2020 as a Democrat. Queens Borough Hall is the seat of government and is located in Kew Gardens. The Democratic Party holds most public offices. Sixty-three percent of registered Queens voters are Democrats. Local party platforms center on affordable housing, education, and economic development. Controversial political issues in Queens include development, noise, and the cost of housing. Each of the city's five counties has its criminal court system and District Attorney, the chief public prosecutor who is directly elected by popular vote. Richard A. Brown, who ran on both the Republican and Democratic Party tickets, was the District Attorney of Queens County from 1991 to 2018. The new DA as of January 2020 is Melinda Katz. Queens has 12 seats on the New York City Council, the second-largest number among the five boroughs. It is divided into 14 community districts, each served by a local Community Board. Community Boards are representative bodies that