He is a Northwestern University grad who began working full time for the president in 2008.
Barack Obama warned sections of society were retreating into "bubbles" in an emotional farewell speech urging Americans to reject discrimination.
Breaking conventions has been a characteristic trait of one of the most popular USA presidents in History.
Forceful at times and tearful at others, Obama's valedictory speech in his hometown of Chicago was a public meditation on the many trials the US faces as Obama takes his exit. And today, once again he addressed a sold-out crowd in the windy city.
He said it's normal and understandable for people to disagree on the best path forward for the country - but outlined three potent forces working to challenge American democracy that will require unity of goal going forward.
"I first came to Chicago when I was in my early twenties, still trying to figure out who I was; still searching for a objective to my life", Obama told Chicagoans.
Mr Obama said: "If I told you all that we would do all that eight years ago. you might have said our sights were set a little too high".
"Politics is a battle of ideas: in the course of a healthy debate, we'll prioritize different goals, and the different means of reaching them", he said. Obama wanted everyone to know that he hadn't abandoned his vision of progressive change.
Erik Karlsson named to 2017 NHL All-Star Game roster
The 2017 NHL All-Star Game will be held January 29 in Los Angeles, and it again will follow a three-on-three tournament format. For the third straight year, Calgary Flames sniper Johnny Gaudreau will be a part of the NHL's all-star weekend.
■ Guardian: "But while for most of the past eight years it had seemed this night would be one of joy and nostalgia, now it came with a sober note, laden with omens and warnings about a democracy under siege". And it's not just my belief.
Obviously, at some point, Obama had to address Donald Trump's policies and the transition between his administration and that of Trump. By reflecting on what we have accomplished as a nation, under his leadership, President Obama implored us all to actively contribute to the pursuit of the democratic ideals that make America unique and strong.
Presidential farewell addresses have always been an American political tradition.
"Rivals like Russia, China can not match our influence around the world unless we give up what we stand for".
Michelle later shared a sweet black-and-white throwback of the family on Instagram during the earlier years of the Obama presidency. So even as Obama seeks to define what his presidency meant for America, his legacy remains in question.
"For all our outward differences, we're all in this together..." "We rise or fall as one". You answered people's hopes, and because of you, by nearly every measure, America is a better, stronger place than it was when we started.
"The future is in good hands."Obama's aides described the usually unsentimental President as being nostalgic before the speech.
Possibly how every daughter would have reacted on hearing such words from her father, Malia teared up and her mother, US First Lady, Michelle Obama had her arm around Malia.
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