M.D.
K.,
I haven't adopted but I think it's a wonderful to do. I read your early one, and I know you are a little confuse on what steps to take. I would really pray about what to do, I know you said you wanted an American child, and yes, there are a lot of them. I don't know if you've ever heard of Steven Curtis Chapman, but he started a foundation to help people adopt. Its' called Shaohannah's Hopes the link below:
http://members.shaohannahshope.org/site/PageServer
He has adopted 3 girls from China; anyway, I think it's a great opportunity to adopt; I've even heard parents who have adopted tell the child, we chose you, just one way to let them know how important they are to your life.
My sister is a nurse; her sister in law wasn't in the right place in her life to handle another kid. I know my sister help finding a family for her nephew, so maybe contact hospitals too, they may or may not be able to help give referral places on adoption.
God bless your family!