As of October 22, 2023, @BarackObama is the most-followed politician and second most-followed person on Twitter with over 132 million followers.

His presidential library in Chicago began construction in 2021. Since leaving office, Obama has remained very active in Democratic politics, campaigning for candidates in various American elections, such as his former vice president Joe Biden in his successful bid for president in 2020.

Obama signed many landmark bills into law during his first two years in office. The main reforms include: the Affordable Care Act, sometimes referred to as "the ACA" or "Obamacare", the Dodd–Frank Wall Street Reform and Consumer Protection Act, and the Don't Ask, Don't Tell Repeal Act of 2010.

From age six through ten, Obama lived with his mother and stepfather in Indonesia, where he attended Catholic and Muslim schools. “I was raised as an Indonesian child and a Hawaiian child and as a black child and as a white child,” Obama later recalled.