You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: THE "I"s HAVE IT 
Clue: In a proverb, it's "no excuse" for breaking the law
ignorance

Category: POLITICIANS 
Clue: This champion stock-car racer lost the 1996 race for North Carolina's Secretary of State
richard petty

Category: U.S. PRESIDENTS 
Clue: Both the U.N. Charter & the NATO Pact were signed by this president

harry s. truman