The CIA stopped federal investigators from interviewing a key witness in their tax fraud investigation into President Biden’s son Hunter Biden.That’s the claim of a whistleblower who has provided the bombshell allegation to House lawmakers investigating the president’s involvement in his son’s business schemes.(snip)Two Justice Department officials assigned to the investigation were summoned to the CIA’s Langley, Virginia, headquarters ahead of their interview of Mr. Morris.“At that meeting, it was communicated that Mr. Morris could not be a witness during the investigation,” House lawmakers said in a letter sent Wednesday to CIA Director William J. Burns.The top Republicans on the...