One of Donald Trump’s employees who has been charged in the Mar-a-Lago case has already provided testimony that could be used in an eventual trial — even though he stopped cooperating as soon as he was indicted, CNN reported. Newly unsealed court filings show Walt Nauta told a grand jury two months before an FBI search in August 2022 about boxes of classified documents he handled in a storage room at the resort, agreeing with one grand juror who asked if he would “just pick some off the top” while leaving others, reported CNN. “At one point in the process of choosing boxes for Trump to review …