SEC Inspector General David Kotz, who is conducting an investigation into the agency's failure to detect Bernard Madoff's alleged "$50 billion ponzi scheme" despite conducting several probes of Madoff's business over the last decade, testified before Congress today.

And from the sound of his opening statement, his inquiry could be worth paying attention to.

Here, paraphrased, are a few highlights from the statement:

- Kotz has asked SEC employees to preserve relevant documents.

- He has sought information from the office of SEC chair Chris Cox, and with senior officials from the agency's compliance section, whose performance is at the heart of concerns that the SEC fell down on the job.

- He has obtained emails sent by former and current employees, both those at the Washington DC headquarters and in the New York and Boston regional offices.

- He hopes to add four new investigators to his team, and is seeking additional office space and administrative help.

- He has scheduled an on-the-record interview with Harry Markopoulos for later this month. Markopolos, who first rasied concern about Madoff's business in a lengthy complaint to the SEC, was scheduled to testify before Congress today but cancelled, citing illness.

- He'll probe conflicts of interest at SEC stemming from Madoff's and his family's relationships with SEC officials.

- He'll also look at the overall operations of the enforcement division.

- And his probe will be "independent and as hard-hitting as necessary."

More news from today's hearing to follow...

The Wall Street Journal has a deeper look at the various government investigations into Bernard Madoff's business, stretching back over the last 16 years -- all of which failed to detect the alleged "$50 billion ponzi scheme" that Madoff is said to have been running.

Among other nuggets, the Journal reports:

The failure to stop Mr. Madoff also is an embarrassment for Mary Schapiro, the Finra chief who has been nominated by President-elect Barack Obama as the next SEC chairman. Finra [the Financial Industry Regulatory Authority, an industry-run watchdog for brokerage firms] was involved in several investigations of Mr. Madoff's firm, concluding in 2007 that it violated technical rules and failed to report certain transactions in a timely way.

Ms. Schapiro declined to comment. Mr. Cox has previously acknowledged mistakes by the SEC. The agency declined to comment.

Close SEC watchers generally have said they expect that under Schapiro, the agency will be a more vigilant watchdog than it has been under President Bush's various chairs, culminating with Chris Cox.

Still, Finra's failure, under Schapiro, to catch Madoff is another reminder that, even though the SEC's problems were in part a result of the pure free-market ideology to which the Bush administration largely subscribed, those problems likely won't immediately be solved by the change of administrations.