Same ideology, not much else matters.

Via Times of Israel:

The Anti-Defamation League on Tuesday said an internal analysis it conducted of Islamist attacks and plots in the US over the past 16 years had shown that 90 percent were carried out by US citizens or legal residents.

The ADL said of 127 individuals involved in 98 domestic plots based on Islamist extremism between 2002-2017, only 10% involved foreign citizens and undocumented immigrants. The vast majority (72%) were US citizens while another 18% were legal residents.

“We found that the most significant threat of Islamist extremism is homegrown, and that encrypted online platforms continue to catalyze radicalization and recruitment to violence,” said ADL CEO Jonathan Greenblatt.