Bo, one of the Obama family's Portuguese Water Dogs, passed away from cancer.

Barack Obama was inaugurated for his second term as President of the United States.

Barack Obama was re-elected for a second term as President, defeating Mitt Romney.

Osama bin Laden was killed during Operation Neptune Spear authorized by President Obama.

The Patient Protection and Affordable Care Act (ACA), also known as Obamacare, was signed into law by President Obama.

Barack Obama was inaugurated as the 44th President of the United States, the first African-American to hold the office.

Obama's grandmother, Madelyn Dunham, passed away two days before his presidential election victory.

Barack Obama was sworn in as the U.S. Senator from Illinois, becoming the only African-American in the Senate at that time.

Barack Obama married Michelle Robinson at Trinity United Church of Christ in Chicago.

Ann Dunham married Lolo Soetoro in Molokai, Hawaii, after meeting him at the University of Hawaii.

Barack Hussein Obama II was born in Honolulu, Hawaii, at Kapiolani Medical Center for Women and Children.

Barack Obama Sr. and Ann Dunham married in Wailuku, Hawaii, six months before Obama was born.