An independent examiner has just recommended stricter ethics rules for managers of the $218.8 billion California Public Employees' Retirement System. According to a suit filed by state Attorney General Jerry Brown, back in 2007, CalPERS board member-turned-investment broker Alfred Villalobos took one of the pension fund's senior investment officers on a private jet ride to New York to attend a Museum of Modern Art fundraiser honoring a client Villalobos was representing. The client, Leon Black, heads the private-equity firm Apollo Global Management, which was seeking a $700 million investment from CalPERS. According to the suit, Villalobos and the investment officer, Leon Shahinian, shared a $1,000-a-night-plus suite at the five-star Mandarin Oriental Hotel. The suit claims Villalobos' firm billed the trip to Apollo. Sometime after, the suit claims, Shahinian touted the $700 million investment to the CalPERS board with nary a mention of the New York trip - and the deal was approved. Shahinian was not named as a defendant in Brown's suit, which is seeking $95 million in penalties against Villalobos and CalPERS' former chief executive, Fred Buenrostro - both of whom have denied any wrongdoing. As for Shahinian, who also maintains he did nothing wrong, he was placed on paid administrative leave over the incident and four months later resigned from CalPERS, where he was earning about $350,000 a year.