Canada opened its doors in 2016 to Syrian Refugees. Thankfully they appear to have been carefully screened (we're learning from past lessons).
If I remember correctly the first batch were Syrian Christians, so not much worry in terms of terrorism there. Subsequent batches have been seen wearing the hijab, but that in itself is alright - It's not a sign of being a conservative takfiri. The takfiri can stay where they are as far as I'm concerned. The video should be a good watch.