To be clear Europe as it is structured with the way it thinks about it self now and for a number of decades is a long term threat to the existence of the United States of America. The solution is easy and solves most problems, we just don't do it.
First this has nothing to do with their Islam problems or the European Union. Really it doesn't have much to do specifically with its economic tail chasing(Greece), lose of shared values (
replacing religion) or stunning
military decline. Those are symptoms.
Their problem, argue it all you want, is social democracy. It is a slow socialism that erodes the individual. It is so far down the road that the lack drive to pass one self (your wisdom, views, ect.) to the next generation is leading to France not being French. If not France pick the country. Mark Steyn and a few others understand and explain not only the
birth rate problem but the problem on the whole.
Why is this a problem for the US? Their collapse is inevitable, long term.