He's been impeached twice, in his first term when Democrats controlled the House of Representatives, which is where impeachment happens. But removing a president requires trial and conviction in the Senate, and enough Republicans there voted against conviction. Several presidents have been impeached; none have been convicted.
> Where is the American people?
My belief is that the right wing in the US has almost absolute information dominance over a segment of the population. They can say anything and that segment will believe them and support it.