U.S. President Barack Obama promised "to get to the bottom" of the failed rescue attempt.

U.S. President Barack Obama spent his fourth year of schooling there.

He had escorted U.S. President Barack Obama on a tour of the museum a week before his death.

They attended U.S. President Barack Obama's first state dinner in 2009.

She has also been personally critical of U.S. President Barack Obama's leadership.

She has called for the impeachment of U.S. President Barack Obama.

U.S. President Barack Obama calls nuclear terrorism "the single most important national security threat that we face".

U.S. President Barack Obama has referred to the bill as "odious".

U.S. President Barack Obama signed it into law the next day.

U.S. President Barack Obama said he was ready to help.