I hope the parents of the deceased sue like there is no tomorrow for millions. As my business law professor would say when giving us a complex situation he’d ask do you sue this person, the state, the county, the city? Answer...everyone...the courts will sort it out.
What we really need from the new Republican Congress is a law that grants standing for ordinary citizens to sue the federal government for failure to enforce border security, and to sue businesses for hiring illegals over citizens (this is an idea of Kurt Schlichter’s). Make the trial lawyers work for OUR side. Because otherwise the courts tend to throw out such suits for “lack of standing”.