here is always to walk us through it marcia coyle of the national law journal. it's good to have you with us again. >> thank you, judy. good to be here. >> woodruff: let's start with this vaccine injury case. tell us what the justices ruled. >> the majority in an opinion by justice scalia said that the federal law, the national child vaccine injury act preempts or blocks state lawsuits based on a claim that a vaccine was defectively designed. the case was brought to the supreme court by the parents of hannah who as an infant received the diphtheria pertussis and tetanus vaccine combination. she suffered severe disabling seizures which she continues to suffer at age 19 today. >> woodruff: this case reminds us that there is another recourse for parents who believe their children have been injured by a vaccine. >> part of the court's rationale was looking at the fact that congress, under this act, created a no fault compensation program. parents can file claims of vaccine-related injuries. if their claim is denied or if the amount of money that they receive is inad