Critics of the OCC have long maintained that the agency was too close with the San Francisco bank. A watchdog's assessment of what transpired between 2009 and 2017 is expected to be completed late this spring.
In the past, the agency cited the legal term in enforcement actions without stating what it meant, but Director Kathy Kraninger has sought to give the industry clearer guidance.
The OCC said Citigroup's main bank subsidiary violated the Flood Disaster Protection Act by not ensuring that borrowers with homes in flood hazard areas had insurance coverage.
In a letter to the agency's inspector general, the 15 lawmakers pointed to specific cases where they said the bureau departed from legal standards in deciding not to require restitution.
The Consumer Financial Protection Bureau faces a busy policy agenda heading into the new year, as well as strong external forces that are beyond its control.
Despite assurances by Director Kathy Kraninger that the agency is cracking down on discrimination, the agency has not filed an enforcement action or sent a Department of Justice referral on a fair-lending violation in two years.
The Department of Business Oversight said TitleMax charged consumers fees to push loan amounts above the threshold at which the state's rate cap applies.
The plan would increase lending and transparency, the regulators say; the company says the rule unfairly lumps together digital wallets and prepaid cards.