You do seem to be deliberately misunderstanding what people are saying here.
I would suggest that it is in "US Interests" to have a fair election process, without intervention from anyone acting on behalf of another country - particularly one that is under sanction. That is NOT the same as equating US Interests to either the Clinton or the Trump campaign.
"Pissgate" emerged AFTER the elections were over, so too late to have any impact on the election, unless you believe in time travel.
But know what? I also would consider it in "US Interests" to investigate if there is evidence that the US President is or could be being blackmailed into acting against "US Interests."
Is it really that hard to understand?