The Senate voted, 53 to 45, to give final approval to Barron. A day earlier, the chamber voted to end debate on his nomination despite a last-ditch effort by Sen.
Barron wrote at least one memo that provided the legal justification for the targeted killing of Anwar Awlaki, a U.S. citizen who was slain by a drone strike in Yemen in 2011. Senators from both parties had pressed for access to the document as a precondition for even considering Barron's confirmation.
On the eve of Wednesday’s vote, the Justice Department announced that it would release the long-sought secret document. Previously the Obama administration had offered only to show unredacted copies privately to senators.
The 1st Circuit Court of Appeals, based on Boston, hears cases from the New England area. Barron's confirmation continues a clearing of a backlog in pending judicial nominations after Democrats lowered the voting threshold to advance the president's choices.