Trump predicted that all his Cabinet picks will get confirmed — here's why he's probably right

The US Senate starts considering President-elect Donald Trump's Cabinet picks in confirmation hearings on Tuesday, and he is extremely confident "they'll all pass."
If history is any indicator, Trump has little to worry about.
In 228 years of the Executive Branch, the Senate has only outright rejected nine Cabinet nominations, while 11 were withdrawn or not acted on by the Senate. 
Considering presidents have nominated at least four to 21 Cabinet-level positions requiring Senate c