MetLife asked a federal judge on Monday to force the U.S. government to hand over 500 pages of confidential records that relate to financial regulators’ decision to designate the insurance giant as systemically important. MetLife is embroiled in a legal battle with the U.S. Financial Stability Oversight Council (FSOC), a panel of regulators chaired by Treasury Secretary Jack Lew that polices for emerging financial market risks and threats to stability. MetLife has argued it is not systemically risky to the broader marketplace, and it is asking the court to overturn the FSOC’s determination.