President Obama should be impeached/brought to trial for abuse of power. He has repeatedly bypassed the United States Congress to inact laws or make decisions in his own interest or in the interest of his administration, which do not reflect the wishes or have had a negative impact on the people of the USA:
Creating Obamacare, and misrepresenting the positive effects of Obamacare to sway the American citizens to support it, in order to help ensure his re-election.
Directing the assination of American citizens, on foreign soil, without due process.
Directing the exchange of Taliban prisoners in exchange for one American hostage.