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 Did this Contractor’s Cut-Rate Work Provide Any Value to Government? Expert Opinion Release Language in Contract Modifications Can Make Sparks Fly Later Expert Opinion Contractors May Be Able to Appeal Despite Government’s Delay in Issuing Its Final Decision