I got the impression that one could apply to testify even if not specifically invited...sort of like a "friend of the court" type of testimony or briefing.
Could be... I'd like to find out, but my time is kind of limited today. Maybe I'll get to look it up in a few days and, if I find anything, I'll post it.
second reply
so far I've got this quoting his testimony and saying he was invited.
not a neutral source, though.
"...Akyol argued that Islamic militants hate the US because it is "materialistic", and that if the US were to teach supernatural creationism, the Muslims would become more friendly to us: "That philosophy, as we all know, is also called naturalism, the idea that nature is all there is. And when that idea, when that philosophy, which has no scientific justification at all, becomes the dominant force in science education in the United States, what you have is that you will have alienated people. You will-- for example, Muslims. They will feel alienated. They will think that there's a school system which imposes on them, on their kids, a philosophy which they don't believe, and which they find to be poisonous, and which doesn't have any scientific evidence at all. That's the important point." (Akyol testimony, Kansas Hearings transcript)
Presumably, Akyol was invited to testify in order to allow IDers to declare that ID isn't simply a front for Christian fundamentalism.
from: Kansas Kangaroo Kourt
http://www.geocities.com/CapeCanaveral/Hangar/2437/kansas.html