I will say that having worked in Congress (albeit briefly and mostly on tech issues) I have seen the victim family card played and it definitely does have a good amount of weight. Hasn't worked for gun control (yet, although you can see it sometimes partially working after mass shootings like Uvalde which led to Texas Senator Cornyn working on gun control), but there may be less of a constituency on the other side of the debate here (or maybe not, car makes do reap tremendous profits from trucks and SUVs so the pushback on anything that could harm those sales might be tremendous)