Toyota Motor North America (TMNA) is the operating subsidiary that oversees all operations of the Toyota Motor Corporation in Canada, Mexico, Puerto Rico, and the United States. Its operations include research and development, manufacturing, sales, marketing, after-sales, and corporate functions, which are controlled by TMNA but sometimes executed by other subsidiaries and holding companies. The company is headquartered in Plano, Texas, with offices in several locations including Georgetown, Kentucky, Ann Arbor, Michigan, Washington, D.C. and New York City.