WASHINGTON -(Dow Jones)- A California bank holding company has agreed to submit a plan to strengthen its credit risk management practices, the Federal Reserve says. The Fed on Thursday released its agreement with United Security Bancshares, which has a subsidiary, United Security Bank, of Fresno. The Fed agreement says the plan must include accurate identification of credit risk within the loan portfolio. The plan must also consider strategies to minimize credit losses and reduce the level of problem assets. -By Jeff Bater, Dow Jones Newswires; 202 862 9249; jeff.bater@dowjones.com