Impeach the bastard.
From the story at The Hill, here:
"A yearlong investigation by the House Armed Services Committee has concluded that the Obama administration broke the law in swapping five Taliban members for Army Sgt. Bowe Bergdahl — and went out of its way to hide the negotiations as they were happening. ... Last year, the non-partisan Government Accountability Office also found that the Obama administration violated the law on the Bergdahl swap. While Democrats on the committee agreed that the administration broke the law, they strongly objected in a dissenting report to the broader conclusions that the administration kept the swap secret for a political motive."
