With the manhunt for Boston Marathon bombing suspect Dzhokhar Tsarnaev still underway, Sen. Lindsey Graham (R-S.C.) on Friday called for him to be held as an "enemy combatant"- a term President Barack Obama abandoned shortly after taking office in 2009.

The "enemy combatant" designation was a major part of the Bush administration's approach to dealing with terrorism suspects; while Obama did away with the specific term, he maintained the right to detain people who provided "substantial" support to Al-Qaeda or the Taliban.

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