ADVANCED PETARD-HOISTMENT, DEMS/RUSSIA EDITION: Focus turns to Obama role. “Months of harping on President Trump’s purported ties to Russia may end up backfiring on Democrats as the White House turns the focus to former President Barack Obama’s failure to address Russian hacking, operatives from both sides said.”

Related: Adriana Cohen: Time To Investigate Democrats’ Russia Behavior.

Not only has there been zero credible evidence to warrant any of the costly investigations to date — despite a year of digging by anti-Trump forces — we now learn the widely debunked dossier published by BuzzFeed — with an assist by CNN — was commissioned by a pro-Hillary Clinton oppo research group to take down Trump.

The slanted dossier not only sparked the whole Russiagate investigation, it also provided a bogus excuse for the Obama administration, DOJ and intel agencies to engage in improper surveillance of Trump associates, unmasking of Trump officials as well as the illegal leaking of sensitive information gathered from the sketchy spying to complicit media in a deliberate attempt to smear Trump.

If this doesn’t scream corruption and collusion at the highest echelons of our government — what does? . . .

Worse, the FBI reportedly paid the discredited British spy Christopher Steele — whose report full of false rumors about Trump were spread to the media — $50,000 and then may have relied on Steele’s fake dossier to advance its Russian/Trump investigation.

Forget the fake Russian collusion. Congress and the special counsel should turn their attention to what the Democrats — from the Obama administration to the Clinton campaign — have been doing to undermine democracy in America.

What we know so far stinks to High Heaven.

Perhaps Rudy Giuliani would be willing to accept an appointment as special counsel.