He lies because he is a Muslim. From the start when he couldn’t swear in on a Bible, when he immediately turned on Israel., the Arab Spring, Benghazi, the Muslim Brotherhood and the list goes on.
He has lied so much that now sane or reasonable person can believe a word he says.
He has lost all credibility; both domestic and international.
He has become totally irrelevant.
The country is essentially leaderless at this point when it really needs a strong leader. Scary times right now.