"The standard for investigating someone is low.
"So just gin up an investigation, make it public, affect every election.”
If the standard is: The left can do it, but the right cannot, we will continue to get it whenever the Left is in power.
A problem which did not bother the FBI when it came to getting Senator Ted Stevens (R Alaska) out of Congress. It also did not bother the prosecution to keep exculpatory evidence from the Senator's lawyers. Different rules apply to different parties with the result that reasonable people might think the US justice system is degenerate.