NEW YORK (TheStreet) -- U.S. lawmakers are planning to examine the relationship between former MF Global (MF) CEO Jon Corzine and credit ratings agencies, according to a published media report.

The report, published on

The Wall Street Journal's

Web site, cited an anonymous source familiar with the matter.

Jon Corzine

Earlier this week, the House Financial Services Committee announced it had

called Corzine to testify

at a hearing scheduled for Dec. 15.

At the hearing, the Oversight and Investigations Subcommittee plans to focus on the "decisions and events leading to the collapse of MF Global, the effectiveness of regulators in overseeing MF Global's activities, and the impact MF Global's bankruptcy will have on its customers," the committee said.

But lawmakers on the subcommittee also plan to examine communications between Corzine and ratings agencies to find out whether Corzine's fame clouded the agencies' judgment, the

Wall Street Journal

report said, citing the anonymous source.

Moody's and Fitch downgraded investment-grade ratings on MF Global days before the financial firm filed for bankruptcy protection, the report noted, while Standard & Poor's cut its rating after the bankruptcy filing.

Representatives of MF Global, Moody's, S&P and Fitch declined to comment on the hearing, the report said, while a spokesman for Mr. Corzine didn't respond to a request for comment.

This article was written by a staff member of TheStreet.