Home Law Government Unable to Invoke Changes Clause After Waiving Contractual Requirement by Acquiescence;... LawNewsResource Library Government Unable to Invoke Changes Clause After Waiving Contractual Requirement by Acquiescence; ASBCA No. 61094, American West Construction LLC January 17, 2018 46 Share FacebookLinkedinTwitter You must be a Paid or Free Trial Member to Access this Content. Paid members, please login to view your news subscription(s). RELATED ARTICLESMORE FROM AUTHOR Claims Agency Executed Purchase Order and Immediately Determined It Didn’t Need What It Just Bought. Did the Agency Breach the Duty of Good Faith and... Expert Opinion Clocking in with PilieroMazza: Labor and Employment News for Government Contractors Expert Opinion War Zone and Contingency Contractors Face an Uphill Battle in Recovering Costs for Stolen, Lost, and Abandoned Equipment: How Facts Matter in Any Recovery