I wonder how this compares to previous administrations? How many thought Clinton, Reagan, Nixon, or LBJ should be impeached?
Don't know about the the others, the highest number I remember seeing for Clinton in a major poll was 27% in Dec 1988 (CNN/Gallup). At that time 37% preferred that Congress take no action, and 33% preferred censure, and Clinton had a 66% overall approval rating.
While I don’t have any numbers to back this up, I suspect you would have to go back to the Johnson Administration (“Hey, Hey LBJ, how many babies did you kill today?”) to find a president who had aroused an equally vehement and numerous opposition to his foreign policy.