05/27/2014: Supreme Court found Florida IQ cutoff for executions unconstitutional.
03/03/2014: Supreme Court heard oral arguments on death penalty for intellectually disabled.
05/02/2014: Obama expressed desire to ask AG Holder to investigate death penalty issues.
05/02/2014: UN urged death penalty moratorium in US.
11/02/2010: Georgia rejected clemency for death row inmate who claimed intellectual disability.
06/20/2002: Supreme Court held the execution of mentally retarded persons unconstitutional.
06/26/1989: Supreme Court found that execution of mentally retarded persons did not violate Eighth Amendment prohibition against cruel and unusual punishment.
07/02/1976: Plurality of Supreme Court lifted temporary moratorium on the application of the death penalty in the US.