There have been cases such as Antonio Bascaró, who has been in prison for 37 years because of non-violent marijuana charges. President Obama has had the opportunity to pardon him, but it was denied because Bascaró was prosecuted under "old laws", and Obama's agenda did not include old laws.
Does anyone besides the president have the authority to pardon people like Bascaró? In other words, could he be pardoned by some other authority?