"Ask the framers what a high misdemeanor is. It must mean something more serious than:

1. A misdeed.
2. Law. An offense less serious than a felony.

Obvoiusly, they didn't intend presidents to be booted for spitting on the sidewalk, etc. "

Nope.
"51. As a technical term, a "high" crime signified a crime against the system of government, not merely a serious crime. "This element of injury to the commonwealth-that is, to the state itself and to its constitution was historically the criterion for distinguishing a 'high'crime or misdemeanor from an ordinary one The distinction goes back to the ancient law of treason, which differentialted 'high' from'petit' treason." Bestor Book Review, 49 Wash L Rev 255, 263-64 (1973). See 4 W. Blackstone, Commentaries *75"
http://hematite.com/impeachment/standards/rpt5.html#51

A high crime does not mean a "more serious" crime, rather it means a crime commited by member (s) of govt or organization. A white-collar crime could also be called a high crime. "High" doesn't describe severity of type of crime, but rather *who* commits the act ("high" is related to the position/power a person has).