There's renewed interest today in the Bob Mueller-led special investigation into alleged Trump-Russia collusion – not so much about what it could reveal, but about whether it even has a future.

The American Center for Law and Justice says the revelation that Hillary Clinton's presidential campaign and the Democratic National Committee helped fund political research into President Donald Trump may be the beginning of the unraveling of special counsel Bob Mueller's investigation. That research resulted in a dossier that was initially designed as "opposition research," but was circulated in Washington last year and was turned over to the FBI for review.

"I think this is a huge bombshell," says Jordan Sekulow, executive director of the ACLJ. "These allegations of the Trump-Russia collusion came out of this dossier – and are much of the basis for the special counsel and the investigation into the 2016 Trump campaign."

The dossier contends that Russia was engaged in a longstanding effort to aid Trump and had amassed compromising information about him. Trump has derided it as "phony stuff," a politically motivated collection of salacious claims. Yet the FBI has worked to corroborate the validity of the document.

The material gathered on Trump in the dossier was tainted, says Sekulow. "It was normal opposition research in the sense that it was focused on the opposing candidate – someone you wanted to beat politically, not something that should be used for law enforcement," he explains.

"... I believe this may be the beginning of the unraveling of the special counsel of their investigation [into collusion between Trump and Russia] because they now realize that anything they're basing this off of came from research that is tainted by partisanship."

Sekulow says this revelation blows up the entire theory behind the need for a special counsel.