Mark Pomerantz, a former special assistant district attorney in the New York criminal investigation of Trump, wrote a book “People vs Donald Trump” all about the NY investigation. After publishing it he openly promoted and discussed it all on TV with shows likes 60 Minutes, NBC News, and Rachel Maddow (MSNBC). Jim Jordan subpoenaed Pomerantz to discuss the book also with his investigative committee. Bragg filed for an injunction to prohibit Jordon from questioning Pomerantz and others formerly involved with the NY prosecutors office.
Seems like Bragg needed to file an injunction already against Pomerantz to stop him from disclosing investigative material. Bragg’s argument is that Pomerantz can openly discuss the investigation materials with everyone except Congress.