Who is the richest living American president? Net worths, ranked: from Donald Trump's real estate fortune to Bill Clinton and Barack Obama's book deal millions, but how about 'middle class Joe' Biden?
Analyzing how 3 U.S. presidents announced the deaths of terrorist leaders : NPR
Obama left Trump a letter before leaving office. Here's what he said
10 Things You Didn't Know About Barack Obama
Could President Obama Win A Third Term? : It's All Politics : NPR
House Democrats on Twitter: "On this #PresidentsDay and #BlackHistoryMonth, we celebrate our nation's first African-American president. As the leader of our nation, President Obama broke barriers, inspired millions and always fought #ForThePeople. #
Why former president Obama picked Joe Biden as his VP: 'We couldn't have been more different'
How Many Terms Can A President Serve? - Constitution of the United States
Presidency of Barack Obama - Wikipedia
Explainer: The 22nd amendment and how it came about : NPR
Barack Obama | Biography, Parents, Education, Presidency, Books, & Facts | Britannica
Barack Obama - Age, Education & Mother - HISTORY
OBAMA, Barack | US House of Representatives: History, Art & Archives
Should President Obama, or any President, be allowed to serve a third term? | Constitution Center
The 15 Most Telling Quotes of Obama's Presidency
Could Barack Obama Serve as Vice President? | Snopes.com
20 U.S. Presidents Before and After They Served In Office - Photos
US Senate career of Barack Obama - Wikipedia
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How Many Years a President Can Serve
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Barack Obama - Terms as President
Barack Obama - Age, Education & Mother - HISTORY
