The story of the mosque in Hammtrack, Michhigan desirous of broadcasting the muslim call to prayer from its mosque (as is customary in other countries) is a fascinating one. This article in the Detroit Free Press is possibly the best one I've yet seen on the topic. It's well-worth a read.
My opinion varies, but I have zero sympathy for any argument which suggests that the call to prayer somehow threatens the community in any way. Perhaps Hammtrack will be a symbolic line in the sand against the censoring power of the rising anti-muslim tide that causes muslims in American to remember that they do not need to choose between being American or Muslim, but that they should be aggressive in loving both and the revelation that these aspects of identity are in harmony, not conflict.