Bloomberg News decided not to investigate Michael Bloomberg and his Democratic rivals after the former New York City mayor joined the race. Bloomberg founded Bloomberg LP, which owns the news company.
"The decision by Bloomberg News to formalize preferential reporting policies is troubling and wrong," Trump campaign manager Brad Parscale said in a statement. "As President Trump's campaign, we are accustomed to unfair reporting practices, but most news organizations don't announce their biases so publicly."
The campaign said it would decide whether to answer press inquiries from Bloomberg News reporters on a case-by-case basis.
Bloomberg News editor John Micklethwait responded that his outlet is not biased against Trump.
"We have covered Donald Trump fairly & in an unbiased way since he became a candidate," Micklethwait said. "And will continue to do so despite the restrictions imposed by the Trump campaign."
The Republican National Committee will also not credential Bloomberg reporters to cover committee meetings and sponsored events, Chairwoman Ronna McDaniel said.