Well if you watched the interview, its answered. For a state to partake as part of an IAEA inspection team, that state must have full diplomatic relations with the country who their inspectors will be inspecting. As you know, we dont have full diplomatic relations with Iran...
"BLITZER: Let's clarify a few points as far as this - this nuclear deal with Iran is concerned.
I take it that all of the IAEA inspection teams, all the inspectors who go in, will have to be from countries that have formal full diplomatic relations with Iran. As a result, no Americans will directly be involved in any on the ground inspections in Iran, is that right?
RICE: Wolf, yes, the IAEA, which is a highly respected international organization, will field an international team of inspectors. And those inspectors will, in all likelihood, come from IAEA member states, most of whom have diplomatic relations with Iran. We, of course, are a rare exception.
BLITZER: So no one...
RICE: The British have diplomatic relations...
BLITZER: - so no Americans...
RICE: - the French...
BLITZER: - will be - I just want to be precise on this. Sorry for interrupting.
No Americans will be on the ground in Iran actually inspecting?
RICE: No Americans will be part of the IAEA inspection teams.
BLITZER: Will Americans be outside of the IAEA inspection teams?
RICE: Well, there are Americans in Iran on a daily basis, Wolf, so I'm not - I'm not sure exactly what you're asking.
BLITZER: I'm talking about American government officials or military officials who could be inspecting.
RICE: We - there are not going to independent American inspectors separate from the IAEA. The IAEA will be doing inspections - the inspections on behalf of the United States and the rest of the international community.
BLITZER: Because I know there are American tourists and Americans who go visit family members in Iran. I'm talking about U.S. government sent people, diplomats or others, to go in there and see what's going on.
I take it they will not be doing that?
RICE: I don't anticipate that, no.
BLITZER: Because the president today said he does not anticipate restoring full diplomatic relations with Iran any time soon.
RICE: Exactly."
Does the deal restrict Iran's ability to buy weapons? – CNN Press Room - CNN.com Blogs
And this has been known ever since the negotiations have been going on... Since essentially day one.