Voting is by name and election is by the Electoral College. The indirection remains. No, House impeachment and Senate trial do not require a serious or indeed

Voting is by name and election is by the Electoral College. The indirection remains. No, House impeachment and Senate trial do not require a serious or indeed any crime. Impeachment is entirely a political matter akin to losing a confidence vote. It carries no penalty besides removal from office. Serious crimes and misdemeanors is not specified and drunkenness has been used (although it was around 1800 or so).