A windbag, who (in general) does exactly the same things (and even worse) that he accused former presidents of doing wrong.
Just one example: before becoming president he constantly blamed Bush and Obama of creating Big Fat Ugly (debt) Bubbles. Right now, under his command, the debt bubble has become twice as big as before the last crisis of 2008.
When this all crashes again, the consequences will be far more worse than last time I think.