Legal aid in the United States is different for criminal law and civil law. Criminal legal aid with legal representation is guaranteed to defendants under criminal prosecution (related to the charges) who cannot afford to hire an attorney. Civil legal aid is not guaranteed under federal law, but is provided by a variety of public interest law firms and community legal clinics for free or reduced cost.
In a series of cases, the U.S. Supreme Court ruled that American indigents do have a right to counsel, but only in criminal cases. See Gideon v. Wainwright. The federal government and some states have offices of public defenders who assist indigent defendants, while other states have systems for outsourcing the work to private lawyers.
Legal aid for civil cases is currently provided by a variety of public interest law firms and community legal clinics, who often have "legal aid" or "legal services" in their names. Such firms may impose income and resource ceilings as well as restrictions on the types of cases they will take, because there are always too many potential clients and not enough money to go around. Common types of cases include: denial or deprivation of government benefits, evictions, domestic violence, immigration status, and discrimination. Some legal aid organizations serve as outside counsel to small nonprofit organizations that lack in-house counsel.
Most typical legal aid work involves counseling, informal negotiation, and appearances in administrative hearings, as opposed to formal litigation in the courts. However, the discovery of severe or recurring injustice with a large number of victims will sometimes justify the cost of large-scale impact litigation. Education and law reform activities are also sometimes undertaken. Funding usually comes from the federal government Legal Services Corporation (LSC), charities, private donors, and some state and local governments. Legal aid organizations that take LSC money tend to have more staff and services and can help more clients, but must also conform to strict government regulations that require careful timekeeping and prohibit lobbying and class actions. Many legal aid organizations refuse to take LSC money, and can continue to file class actions and directly lobby legislatures on behalf of the poor. Many organizations that provide civil legal services are heavily dependent on Interest on Lawyer Trust Accounts for funding.