But the company said it is "making the appropriate adjustments for our customers regarding past issues with disclosure of late fee assessments" and compliance with military lending laws. "We regret any inconvenience or hardship that our customers may have experienced," the Newark, Del., company said. Democrats on Capitol Hill have questioned whether Navient should keep its contract to collect payments for the Education Department, which makes the bulk of student loans. Education Secretary Arne Duncan on Tuesday said at a news conference that his agency is reviewing whether Navient violated the terms of its contract to manage payments on federal student loans.