Europe has no such diversity and latitude in religious freedom. American religious freedom is an anomaly in world history. It is the backbone of our love of freedom and do - or -die commitment to be "free".
Europe has no commitment to individual freedoms when compared to America. American government silliness in bringing over mullahs is just that - but in Europe that action would bear more weight, more meaning and signify more serious intentions.
There are so many differences between Euro religious traditions and American ones that it should be studied by all non-American countries. This is the real strength of America - not its bombs or leaders. :-)