People convicted of crimes are subject to a criminal sentence, but they are also subject to a host of other legal measures: Some are denied access to jobs, housing, welfare, the vote, or other goods. Some may be deported. Others are subject to continued detention. Many have their criminal records made publicly accessible. These measures are often more burdensome than an offender's formal sentence. This is a book-length philosophical examination of these burdensome legal measures, called collateral legal consequences (CLCs). The text draws on resources in moral, legal, and political philosophy to shed light on whether these measures are ever morally justified. It analyzes the various kinds of CLCs imposed in different legal systems and the important moral challenges they raise, and it makes the case that these challenges have been largely overlooked by philosophers.