The civil suit called for more safety reviews to be done before any experiments could be conducted at the collider. Chief Judge Helen Gillmor wrote in her decision that the US federal courts do not have jurisdiction over the European-based collider, even though the project received US$531 million in US funding. Gillmor concluded that the US contribution was not a "major federal action" because it accounted for less than 10 percent of the cost to construct the collider.
Fears about the collider experiments reached such a furor that Frank Wilczek, an MIT physics professor and Nobel laureate, received death threats because of his earlier involvement with the Large Hadron Collider.