Nixon presided over a period of significant foreign-policy realignment, opening diplomatic relations with the People’s Republic of China and pursuing détente with the Soviet Union, including the SALT I agreement. Domestically his administration created the Environmental Protection Agency and advanced major environmental and economic measures.
His second term was dominated by the Watergate scandal; revelations of abuses of power led to investigations, impeachment proceedings in the House, and his resignation in 1974. Nixon’s legacy remains mixed—praised for diplomatic and policy achievements and criticized for the constitutional crisis and erosion of public trust.