Republican morality in Congress
About 10 years ago, Republicans passed with much fanfare a rule within their party that any member under indictment for a felony had to step down from party leadership. This was in reaction to the problems Democratic leader Dan Rostenkowski created for himself.
The Republicans just got rid of this rule this week, worried that Tom Delay is about step into the same trap. Talkingpointsmemo.com is all over this. I recommend taking a first look here, and then just seeing what the website is saying now.
The Democrats have had a similar rule for many years, and have no plans to remove it from their rule book.
(Thanks Steve for the pointer!)