TransUnion, one of the nation’s 3 largest consumer credit reporting companies, agreed on Friday to be acquired by a pair of private equity funds - Advent International and GS Capital Partners, a Goldman Sachs unit.  The sellers, both based in Chicago, are Madison Dearborn Partners and the Pritzker family. While full terms of the takeover were not announced, it is known that the sale price is $3 billion, and that the deal is expected to close in Q2 of 2012.  The deal is not expected to result in any changes to company management. The Pritzkers had controlled TransUnion until 2010, when they sold their controlling interest to Madison Dearborn Partners, one of Chicago’s largest private equity shops.  At that time, the company was worth $2 billion - which translates into a 50% appreciation in just 2 years. Recent Developments in Credit Reporting. Credit agencies produce on-demand reports featuring a consumer’s credit score and a detailed snapshot of a person’s borrowing history.  They have drawn criticism for producing the occasional error-riddled report and for deferring to creditors at the expense of consumers. More significantly, the credit reporting industry faces broad federal oversight for the first time.  On Thursday, the Consumer Financial Protection Bureau, the nation’s federal consumer watchdog, unveiled a plan to keep a closer eye on credit reporting companies and debt collectors, 2 industries that have largely flown under the government’s radar. All told, the industry’s 30 largest companies, including TransUnion and its 2 biggest competitors, Experian and Equifax, would be affected.       [DealBook, 2/17/12]