We're a-ok to disagree IrvineCommuter, as long as it's not disagreeable!
Yes, the Clinton impeachment also went way off the rails. That's a problem when a Special Counsel (SC) is appointed. Same thing happened with the SC on Iran Contra. That one blew up the Bush 1/Clinton election when the SC indicted Casper Weinberger in June of 1992 - kinda like what Comey did with the whole Clinton E-mail deal with virtually the same timeline! Since the Tang Menace has never been put under oath, chasing down his attorney data over what was a sordid affair isn't going to become an impeachable offense. Trump may be a cheezy guy, but that's not enough to impeach. It was in the case of Clinton as he was deposed and under oath. Once the lie was told, by a lawyer who should know better, there needed to be some penalty. Clinton was legally impeached, but not thrown from office, because I think those in the Senate at the time realized it was a pretty thin overall case to begin with.
Nixon obstructed justice. No quibble there. Is he the sole example of Presidential malfeasance? Hardly. If the same standards pushed on Nixon were applied to almost every other administration, they'd all be in jail. Perhaps that's not a bad thing after all......
The Special Counsel (SC) should have been hired for one job, and one job only - to determine if there was any credible collusion between the Trump campaign and a foreign power - that's the question to resolve. Do I care if Paul Manaforte was a paid agent of a foreign power? Not really. Do I care that Erik Prince was trying to establish a back channel to Russia right after the election, as every party and president does? No. I do not care.
I do care about the endless investigation process, spreading as far and as wide as possible without any check or balances - no matter the party in power. The SC is being used as noted by others to keep the anger going through the 2018 mid terms. That's wrong IMHO. If we need any clearer example, albeit in micro form, has anyone heard much about the Roy Moore child rape investigation lately? No. Since that election is over, there isn't going to be an investigation. My guess is that once the House flips in November, the same thing may occur.
This is all becoming much ado about nothing, for the ends justify the means in this case. That's our present situation.