Has the Vatican really rejected Obama's proposed ambassadors?

This question has been addressed on MOJ here and here.  The answer may be technically "no" because "no candidates have been formally submitted."  But, according to the London Times, the answer is "yes" - three candidates have been rejected in the informal vetting process, including Caroline Kennedy and Doug Kmiec.

UPDATE:  President Obama would be well served, IMHO, by selecting a pro-life Democrat MOJ blogger as Ambassador to the Vatican.