Franklin D. Roosevelt issued the most presidential vetoes with 635. At that time, US presidents could serve more than two terms (four years being one term). Roosevelt served four terms, which allowed him to make more vetoes. The vetoes covered a wide range of topics, from safeguarding homing pigeons to retailer purchase of beer on credit.
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Five pairs of presidents have been relatives. Theodore Roosevelt and Franklin D. Roosevelt were fifth cousins; William H. Harrison and Benjamin Harrison were grandfather and grandson; James Madison and Zachary Taylor were second cousins; John Adams and John Quincy Adams were father and son; and George Bush and George W. Bush were father and son.
Three presidents have stood trial for impeachments: Andrew Johnson in 1868, Richard Nixon in 1974, and Bill Clinton in 1999.
Former President James Garfield was ambidextrous and could write Greek with one hand and Latin with the other.