United Artist Inc. a Maryland corporation, sponsored a defined benefit pension plan administered by United Pension Plan. United Pension was controlled by a board of trustees. For a period of 9 years, seven members of the board made loans to themselves from the pension assets. The loans were made without reference to the ability of the borrower’s to repay, the period in which repayment would be made, or the provision of collateral for the loans. The trustees were charged less than the market rate of interest. None of the loans were repaid in full and the plan suffered substantial losses. Did the board of trustees violate ERISA and what, if any, is their liability? Explain.