an amount equal to the original purchase price of the materials that have not been used for such purpose. (B) No waiver The penalty under subparagraph (A) may not be waived. (d) Impact of delay If the Secretary of Defense delays in submitting the plan required under subsection (a) or executing that plan as required under subsection (b), the travel budget of the Under Secretary of Defense for Policy shall be decreased by one percent for every two days of delay. 4. Report Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall submit to Congress a report containing the following: (1) Any internal correspondence of the Department of Defense that informed the decision to forgo the excess property disposal process of the Department of Defense and instead pay $130,000 per day to store border wall panels. (2) A list of the individuals and entities the Department is paying for use of their privately owned land to store unused border wall construction materials. (3) An explanation of the process through which the Department contracted with private landowners to store unused border wall construction materials, including whether there was a competitive contracting process and whether the landowners have instituted an inventory review system. (4) A description of any investigations by the Inspector General of the Department that have been opened to examine the wasteful policy of paying to store border wall construction materials rather than using those materials to continue building or fortifying the wall on the southwest border of the United States.