Obama targets former President Bill Clinton

The Democratic presidential candidate is targeting, not his opponent Hillary Clinton, but her husband, former President Bill Clinton, who has been increasingly vocal on the campaign trail.

"He continues to make statements that are not supported by the facts--whether it's about my record of opposition to the war in Iraq or our approach to organizing in Las Vegas. This has become a habit, and one of the things that we're going to have to do is to directly confront Bill Clinton when he's making statements that are not factually accurate," Obama said during an interview with ABC News.

Both Senators Obama and Clinton are intensifying their focus on African-American voters. In Atlanta Sunday, Obama spoke at the church where Dr. Martin Luther King Jr. launched the Civil Rights Movement.

Clinton attended services at an historic black church in Harlem and spoke about seeing Dr. King speak when she was young. She called it a 'transforming' experience.

The full interview between Sen. Barack Obama and ABC's Robin Roberts will air Monday on Good Morning America at 7 a.m. on ABC7 Chicago.