Muslim terrorism can come from first, second, third-generation migrants. Native born Muslims are just as much part of the jihad terrorist candidate pool as recent immigrants. The identities of Muslims who’ve carried out terrorism in France, the U.K., and the USA bears this out. That’s why all Islamic immigration is bad. Even if the immigrant is an OK citizen, his kids and grandkids still grow up Muslim and therefore still might kill you.
That puts them in the low end of mainstream killers.