U.S. approaches to oversight of research and technological products have developed over time in an effort to ensure safety to humans, animals, and the environment and to control use in a social context. In modern times, regulatory and oversight tools have evolved to include diverse approaches such as performance standards, tradable allowances, consultations between government and industry, and pre-market safety and efficacy reviews. The decision whether to impose an oversight system, the oversight elements, the level of oversight (for example, federal, state, local), the choice of approach (for example, mandatory or voluntary), and its execution can profoundly affect technological development, individual and collective interests, and public confidence in technological products. Oversight is conducted by a range of institutions with various capabilities, cultures, and motives. Avenues for disputing oversight decisions are also important, and some argue that the U.S. operates in an adversarial regulatory culture in which Congress, the media, and stakeholders regularly contest the decisions of federal agencies.