Of course. He was born there in 1961 and attended kindergarten there. He graduated from high school there in 1979. And to this day, he still has friends and relatives (including a half-sister) who live there.
Hawaii and Illinois
For him to be the President of the United States he would have to have been born in the USA. Before Hawaii was a State, it was an Annex of the United States, but he was born after Hawaii became a state.
Barack Obama lived in Illinois before becoming president. He first became a senator of Illinois before president of the US.
Barack Obama was president of the Harvard Law Review journal before becoming president.
In the US Senate.
Barack Obama was born in Hawaii, spent some time in Indonesia with his mom and step-dad, moved back to the US and lived in Hawaii, and then lived in California, New York, Massachusetts, and Illinois; it was in Illinois that he began his political career.
Before he became president, he was a US Senator from Illinois.
Before he became president, Barack Obama lived with his family in Chicago, which is in the state of Illinois. After he became president, he and his family moved to the White House in Washington D.C.
Many different Presidents had done their own things before they became President. Please specify the president. If speaking of the current US President Barack Obama, he was a senator from Illinois before he became the President. If speaking of Nelson Mandela from South Africa, he was a political prisoner in jail before he became the President. If speaking of Paul Biya in Cameroon, he was the Prime Minister before he became the President.
Before being elected as President of the United States, Barack Obama was the junior Senator for the State of Illinois.
Barack Obama's father's name before he converted to Islam was Barack Obama Sr.
The previous president was George W. Bush.