NEW : Head of Government Accountability Office speaks to House committee . Though attacks are down , situation in Iraq remains `` volatile and dangerous '' Report cites `` unfinished '' legislative agenda in Iraq . By Tom Curry, National Affairs Writer, NBC News WASHINGTON --
NEW : Head of Government Accountability Office speaks to House committee . Though attacks are down , situation in Iraq remains `` volatile and dangerous '' Report cites `` unfinished '' legislative agenda in Iraq . Iraq 's oil production remains below U.S. goals , report says .