What if the government provided a $100,000 payment in death benefits to every citizen who was killed by an illegal immigrant? The illegal immigrant had to be identified and the cause of death had to be demonstrated by a preponderance of the evidence. This would encourage people to come forward to collect the benefit and create a record of all deaths of citizens caused by illegal immigrants.
Might work - but not until they pay a 1 Million dollar settlement to every family of a military warrior killed in action....