In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

This President introduced the Comprehensive Health Insurance Act in his final year of office and declared ""now I am a Keynesian"" after eliminating the gold standard. This man signed the first Clean Air Act and created the Environmental Protection Agency. This President was the first president to visit the People's Republic of China. This President came to power by defeating Democrat Hubert Humphrey in the election of 1968. For 10 points, name this Republican President who resigned in 1974 in the wake of the Watergate scandal.
History