Mueller has to send his confidential conclusions to the Justice Department. Then, Attorney General William Barr will send his own report to Congress. He can decide what information to give to lawmakers or the public.
In a series of tweets, Trump said the special counsel "should never have been appointed and there should be no Mueller Report." He also claimed Mueller's investigation was "an illegal & conflicted investigation in search of a crime."
"THIS SHOULD NEVER HAPPEN TO A PRESIDENT AGAIN!" he added.
Trump has repeatedly railed against the investigation, which he has called an illegal "witch hunt," as it moves closer to him. The probe has contributed to guilty pleas from several former members of Trump's inner circle and charges against numerous Russian nationals and companies.
For instance, federal prosecutors have said Trump directed his ex-lawyer and fixer Michael Cohen to commit campaign finance violations ahead of the 2016 election. They say Cohen paid off two women who claimed to have affairs with Trump in order to influence the election's result. Cohen pleaded guilty to those charges and others after Mueller's team referred the case to U.S. attorneys.
Still, the charges against some in the president's orbit, such as his former campaign chief Paul Manafort, did not directly relate to work for the Trump campaign. The president has repeatedly denied any wrongdoing.
During Barr's confirmation process, Democratic lawmakers worried about how he would handle the Mueller investigation. In January, he told senators that he does not believe the special counsel would be "involved in a witch hunt."
Last month, Trump said whether to release the report would be "totally up to" Barr.
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