He wouldn't have in the example you gave. I see no relevance to such examples.
Okay, then you agree that there are
some questions which, if lied about, would not, or at least should not lead to impeachment. My next question is, "Why is his sexual activity not
one of those kinds of questions?"
But for now I'll answer your scenario.
Ziggurat said:
Since you're intent on diverting the conversation down a side road, let's make this simpler with a specific example of non-sexual perjury. Suppose Clinton was asked under oath about why a White House staffer was fired. Suppose this staffer was fired because Clinton discovered they were a registered Republican, but Clinton claimed it's because he underperformed. No sex involved. Would Republicans have tried to impeach if they could prove perjury? I think they would. Furthermore, I believe the argument that his impeachment was about the sex and not the perjury requires that they would not.
So, under this scenario, do you or do you not think that Republicans would have tried to impeach Clinton?
I think that absolutely they would have tried to impeach him for this. They would have tried to impeach him for just about anything. Maybe even lying about brushing his teeth, they were that desperate.
I notice that you did not ask the larger question "
Should he be impeached for perjury in this hypothetical case." In this case, my answer is "no". Hiring and firing of staffers is at the President's discretion. Even firing of appointed judges without good cause (as demonstrated during the
Alberto Gonzalez affair) is not an impeachable offence, since they serve at the president's pleasure. Some may argue that Gonzalez should have been impeached (if he hadn't resigned) but I am not among those. It is possible that the fired staffers/judges might have right to sue the person who fired them in civil court for slander or libel (depending on the medium), but again, this comes nowhere near rising to the level of "high crimes and misdemeanors".
So now I've answered your question, a great deal more directly and completely than you did mine, so I'll give you another chance to be straightforward.
If you agree (as you indicate above) that there are
some questions which should not be tested for perjury if lied about, why do you think sexual behavior, when it is unrelated to the investigation, is not one of those questions? Don't come back with "it's perjury", because you've already agreed that some questions should not have a perjury test.