Do you feel the need to respond to this person? Challenge them to spend one hour reading any of the materials posted here. Include not only Clinton archives but also background material on Iraq.
Suggest that it will not be possible to talk with them about these matters until they have developed an informed opinion.
Do your homework. Don't be so lazy as to assume that you know the truth when you are doing little more than your liberal family member. Study and research. Know why you believe and learn the facts. Become informed.