IIRC, there have been Arabs of either religion in Dearborn since the 1920’s when they were brought in by Henry Ford.
Muslims in Dearborn are therefore long established and are the nearest thing to “assimilated” here.
You’re right, Somalis in Minnesota are wildly unregulated, dangerous, and from them come the highest number of ISIS participants in America. They’re even found in Idaho.
Here in Tennessee we also have a Muslim problem, starting with the Murfreesboro mega mosque. One jihadi website promises to stretch Shariah rule “From Tennessee to Teheran”.
My friend tells me that 90% of the people who come from the mideast pass through Dearborn on their way to somewhere else. It makes an ideal place for monitoring because they have so many middle easterners working for them.
Personally I worry a lot more about the rural muslim populations popping up all over the country. For instance, Coldwater Michigan literally was Amish country but has a growing muslim community because of the prison there.
The Catholic Bishop in Baghdad grew up in Dearborn