Watson is an American Studies professor at Lynn University. His many works include The Obama Presidency: A Preliminary Assessment, George W. Bush's Presidency: A Preliminary Assessment, and George W. Bush's Presidency: A Pre SUNY Press published Bush: Assessing the President at Midterm and Living in the White Mansion: A Social History of the First Family and the President's House. He is a resident of Boca Raton, Florida.
- Affairs of State: The Untold History of Presidential Love, Sex, and Scandal, 1789-1900
- Alexander Hamilton: Adultery and Apology: Observations on Certain Documents in the History of the United States for the Year 1796
- America's First Crisis: The War of 1812
- America's War on Terror
- American First Ladies, Second Ediiton