This entire family needs to have their assets forfeited and given to the victims families and they need to be deported.
I like this solution..........any immigrant (citizen or not) who has resided in the USA who commits or is convicted of committing terrorism and or domestic terrorism will be cause for the USA to deport/expel all and any living family members and any blood line family who reside in the USA. ...Their assets confiscated and proceeds will be used to pay for their deportation expenses.