evidence: The contents of Hunter Biden’s laptop computer have sparked debate and controversy since the New York Post and other news organizations in the closing month of the 2020 presidential campaign reported stories based on data purportedly taken from it. [...] When his work was completed, Della Rocca said, Mac Isaac repeatedly attempted to contact Hunter Biden, who had signed a repair authorization, to advise him the laptop was ready to be picked up, but Hunter never responded. Della Rocca added that Mac Isaac finally came to regard the MacBook as abandoned property. [...] In an email with the subject line "Why is it so difficult to be a whistleblower when you are on the right?" written on Aug. 26, 2020, Mac Isaac told Costello that he had copies of the hard drive from Hunter Biden’s laptop.