Did we recently have a President who refused to release his phone conversations and emails? Asking for a friend.
Under the Presidential Records Act, the executive branch, including the president, has to preserve their records and give them to the National Archives and Records Administration. That agency makes many of these documents publicly available 12 years after the president leaves office, at the earliest and may never release them, if the information needs protected. President Trump didn't have to immediately release his phone conversations and emails, just because your people wanted them.
Keith