transition of power.
He actually withheld critical info on foreign affairs from the incoming president's administration, and his excuse is that Jim Comey didn't have any evidence of wrongdoing, but he thought Flynn seemed to be talking to the Russian an "unusual" amount (which of course cannot be defined).
Nevermind that Obama had just pissed off Russia in the weeks before Trump was to take power, and Russia was threatening sanctions that could put us into a new Cold War.
Utter corruption and misuse of power by Obama. He also orchestrated an secret surveillance to continue after he left office, and he arranged for his loyalists to leak to the complicit liberal msm and to do anything they could to derail the new president.