Debt forgiving: Why just Iraq?

I just saw this article in the NY Times regarding the U.S. push to have other countries forgive Iraq's debt.

See it here:

While I think this is a good idea (although one that the Bush administration will trumpet first as a point that the world agrees with what we're doing and second as one that his administration is doing the right thing in Iraq), my main question is why aren't we pushing for this more in Africa or Haiti?

The author of the piece even takes a poke at the countries that are struggling in Africa:

The treatment being given Iraq has in the past been reserved for so-called heavily indebted poor countries, mostly aid-dependent nations in Africa.

Italics mine. Anyone know what the full story is here?