Republican President Richard Nixon deserved impeachment (indictment in the U.S. House) and conviction in the U.S. Senate for committing a high crime or misdemeanor.
Tricky Dick actively aided and abetted a felony, namely the burglary of Democratic National Committee offices in the Watergate complex.
Democratic President Bill Clinton did not deserve impeachment or conviction for having consensual sex with an adult intern. Adultery is no longer a crime, but a private matter for resolution only between husband and wife.
Nixon resigned to avoid certain impeachment and conviction for a real crime. Republicans couldn't muster the votes to impeach and convict Clinton for having oral sex in the White House.
Republicans are once again threatening impeachment--this time alleging President Barack Obama has done unspecified "unconstitutional things."
Leader of this branch of right-wing wackos is U.S. Rep. Kerry Bentivolio (R-Mich.), a former Santa Claus impersonator and reindeer rancher.
Ho, ho, ho. (25 AUGUST 2013)