[JURIST] Congressman Randy "Duke" Cunningham (R-CA) [official website] pleaded guilty Monday to charges of conspiracy to commit bribery, mail fraud, wire fraud and tax evasion and promptly resigned from office. Cunningham admitted to taking $2.4 million in bribes in a case that stemmed from an investigation into the sale of his home and became a wide-ranging probe uncovering payments in cash, yacht-club fees and antiques. The scandal is one of a few recent GOP controversies including a campaign finance case [JURIST report] involving Rep. Tom DeLay (R-TX) [official website; campaign website]; an investigation [JURIST report] into a stock sale by Senate Majority Leader Bill Frist [official website]; and the CIA leak case [JURIST news archive] involving former chief of staff to Vice President Cheney, I. Lewis "Scooter" Libby. AP has more.