MLB to Investigate Bonds?

The New York Times Murray Chase in an article today calls for MLB to investigate Barry Bonds about his suspected steriod in the face of his closing in on Hank Aaron's home run record of 755.
There is a link to the story below.
http://www.nytimes.com/2006/02/14/sports/baseball/14chass.html?_r=1&oref=slogin

My problem with this is that at the time Bonds is suspected of using steriods there were no rules in place forbidding it. Bonds may have cheated professional sports of it's most hallowed record if he used steriods. But as guilty as Bonds would be Bud Selig and the Players Assocation would be guilty also for turning a blind eye to steriods in 1990's and early 2000's. The best thing for everyone involved would be for Bonds to simply retire right now and let this issue die down.