By Bob Brigham One of Donald Trump’s official representatives to the National Archives and Records Administration (NARA) has been granted criminal immunity and is set to “soon testify” before the federal grand jury investigating the Mar-a-Lago documents, The Wall Street Journal reported on Wednesday. Kash Patel, a former Devin Nunes aide who worked in the Trump administration, reportedly invoked his Fifth Amendment right against self-incrimination when he testified before the grand jury in October. “A federal judge recently decided the Justice Department couldn’t force Mr. Patel to testify wit…