Home Law GAO Unconvinced by Challenge to Sole-Source BPA; Castro & Company, LLC, GAO... LawNewsProtestsResource Library GAO Unconvinced by Challenge to Sole-Source BPA; Castro & Company, LLC, GAO B-419366 February 25, 2021 80 liveostockimages | Shutterstock 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 Law Labor Hours Under Fire: GAO Denies Protest of Staffing Hours Assessment Law When a Misrepresentation Doesn’t Matter: GAO Says No Harm, No Foul Law Software Upgrades and Sour Grapes: When Being the Incumbent Isn’t Enough