As far as the Moscow Tower ... everyone lied, so what is the crime? No one cares about the lie
Perjury for corrupt intent.
Bill Clinton's REAL crime is that he got a BJ under the desk in the Oval Office instead of off in some private love nest like Newt was doing at the time. Or like Kennedy did. Or like Ike did, etc. All the way back to Thomas Jefferson and probably beyond.
But he got impeached for Perjury: You have to convict people for actual simple straightforward crimes, not big nebulous possible conspiracies. I'm not saying there wasn't a big conspiracy to elect Trump with Russia help so he could kill sanctions. I bet Mueller can prove it too, with real hard documentary evidence. But he's already released enough to impeach.