CIA's main mission is foreign intelligence... as long as it is not used as a means to finance terrorists, we will be okay.
LOL, "Eh Ahmed, we got those Bitcoins in. We can now blow up the embassy!" checks exchange "Wait, we can now shoot five bullets at the embassy!" checks exchange again "Wait! We can fly a plane into the embassy!" checks exchange "Hold on, I'm not sure we can afford a plane, but maybe a car.. 2 bullets.. pickup truck! Pair of sandals.. By the prophet's beard Ahmed, let's just go over and surrender"
hahahaha:-)
Considering how close bitcoin looks like "Islamic banking", maybe they were worried.
Lucky for us, we have extreme infidel asshattery in the form of mtgox and #bitcoin-otc.
More information on Islamic banking:
http://en.wikipedia.org/wiki/Islamic_banking