Section 20
SEC. 20. Foreclosure—The Board shall have the right to require the debtor to increase the value of the security of the loan obtained by him in the event of any material depreciation in the value of such security, and failure to comply therefor within ninety days from the date of said requirement, would constitute ground for foreclosure of " the mortgage. It shall also make proper provisions for the insurance of all property which shall be held by it as security. All such real estate as may come into its possession on account of money loaned as shall not be necessary for the accommodation of the Government Service Insurance System in the convenient transaction of its business shall be sold and disposed of within five years after title to the same shall have been acquired, or within five years after the same shall have ceased to be necessary for the accommodation of the business of the System, and it shall not hold such property for a longer period unless the interests of the System will materially suffer by the forced sale thereof.