Barack Obama was the 44th president of the United States, elected in November 2008 and holding office for two terms. He is the author of two previous New York Times bestselling books, Dreams from My Father and The Audacity of Hope, and the recipient of the 2009 Nobel Peace Prize.

He lives in Washington, D.C., with his wife, Michelle. They have two daughters, Malia and Sasha.

Thomas Jefferson was the third President of the United States (1801 o1809), the principal author of the Declaration of Independence (1776), and one of the most influential Founding Fathers for his promotion of the ideals of republicanism in the United States. He envisioned America as the force behind a great "Empire of Liberty" that would promote republicanism and counter the imperialism of the British Empire.

George W. Bush served as the forty-third President of the United States, from 2001 to 2009. He had previously served as Governor of Texas. He and his wife, Laura, live in Dallas, where they founded the George W. Bush Presidential Center at Southern Methodist University. President Bush is the author of three #1 bestsellers: Decision Points, his presidential memoir; 41, a biography of his father, President George H. W. Bush; and Portraits of Courage, a collection of oil paintings and stories honoring the sacrifice of America’s military veterans.

John F. Kennedy (1917-1963) was president of the United States from 1961 to 1963. At forty-three, he was the youngest man ever elected to the Oval Office and the first Roman Catholic president.