The wrongfully incarcerated in US prisons
Studies suggest that between 2.3% and 5% of the people in US prisons are actually innocent; since 1989, more than 250 people in 34 states have been exonerated and released from prison through post-conviction DNA testing.
Some states - and the federal government in some circumstances - now offer compensation to exonerees. Many do not. Up to 40% of those released from prison after being wrongfully incarcerated receive no compensation.
Those states that do not currently offer compensation to the wrongfully convicted are: Alaska, Arizona, Arkansas, Colorado, Delaware, Georgia, Hawaii, Idaho, Indiana, Kansas, Kentucky, Michigan, Minnesota, Nevada, New Mexico, North Dakota, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Washington and Wyoming.
Even those that do offer compensation may impose limits that make them essentially meaningless. New Hampshire, for example, caps compensation at $20,000 and Louisiana caps compensation at $250,000 irrespective of the length of time served. Montana only provides educational aid.