The so-called "American Taliban" is asking the president again to commute his sentence.
Lawyers for John Walker Lindh have renewed a Petition for Commutation, asking President Bush to commute Lindh's 20-year prison sentence.
Lindh had originally asked President Bush to shorten his sentence in September of last year, saying his case should get another look after another U-S born Taliban suspect - Yaser Esam Hamdi - was released.
In an appeal to the president filed yesterday, Lindh's lawyers say other defendants who have recently pleaded guilty to similar charges have received much shorter sentences.
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Lindh grew up in Marin County, Calif. He was captured with other Taliban prisoners in Afghanistan in December 2001.
He is serving 20 years in prison for aiding the Taliban as an armed combatant.