Sen. Barack Obama sat down with BlogHer today to answer key policy questions developed by this community of bloggers for 2008 presidential candidates.

In an exclusive on-camera interview with BlogHer, Sen. Obama (D-IL) answers questions about the economy, Iraq, health care and the environment -- including a health-care screening process for every veteran and support for their spouses and families, health insurance coverage for birth control to avoid unwanted pregnancies, and working with China and other countries on climate change, a "major problem."