A surprising number of presidential scandals have involved alleged attempts to cover up wrongdoing. In light of this history, it might appear strange to ask, “Can the president obstruct justice?” The answer would seem obviously to be yes. That is probably correct, but the issue is more complicated than it initially appears. This chapter recounts the arguments on both sides, describes the elements of obstruction of justice, and discusses historical examples. The great weight of argument suggests that the president can obstruct justice, but this question is not likely to be decided by courts or even on the basis of traditional legal arguments. The real question is whether Congress can be persuaded to impeach and convict a president for obstruction of justice. Experience indicates that the answer is yes, in the right circumstances. Whether those circumstances exist depends on the vigilance of the American people.