Notwithstanding his divisive and dangerous rhetoric, Trump's presidency has been marked by more orthodox policies than his opponents feared and his supporters expected.
It's not that his term is coming to an end, which is the normal definition of a lame duck. It's that his schtick has worn off, and once that's gone all that is left is a below-average president in terms of political effectiveness, intelligence, credibility and approval ratings.
Since the New Deal, presidential power in the United States has been based on the almost plebiscitary connection established with public opinion. Donald Trump is the first to play on the country’s divisions to reinforce his support.