U.S. President Barack Obama and his Republican Party challenger in the upcoming presidential election, Mitt Romney, have squared off in the first presidential debate in the city of Denver, Colorado.

Barack Obama and Joe Biden's "bromance" is widely celebrated, but their relationship is complex.

CHICAGO – On the same day that the U.S. Supreme Court legalized gay marriage, President Barack Obama traveled to Charleston, South Carolina, to deliver a eulogy for nine church members who were ...