US Intelligence agencies overheard Russian officials discussing Donald Trump and his associates way back in 2015.

Donald Trump sitting with a number of people mentioned in Junior's collusion email in 2013.

Courtesy of the Wall Street Journal: 

Investigators are re-examining conversations detected by U.S. intelligence agencies in spring 2015 that captured Russian government officials discussing associates of Donald Trump, according to current and former U.S. officials, a move prompted by revelations that the president’s eldest son met with a Russian lawyer last year. 

In some cases, the Russians in the overheard conversations talked about meetings held outside the U.S. involving Russian government officials and Trump business associates or advisers, these people said.

The 2015 conversations were detected several months before Mr. Trump declared his candidacy for the White House. The conversations have been in investigators’ possession for some time, but officials said the Donald Trump Jr. news this week prompted them to look at them again.

In 2015, intelligence agencies weren’t sure what to make of the surveillance reports, which they viewed as vague and inconclusive, the current and former officials said. But the volume of the mentions of Trump associates by the Russians did have officials asking each other, “What’s going on?” one former official said.

Now, in light of the release of emails Tuesday by the president’s eldest son, describing a 2016 meeting with a Russian lawyer, investigators are going back to those early reports. They are seeking new leads as they probe whether the Trump campaign colluded in what several U.S. intelligence agencies say was a Russian government-sponsored effort to meddle in the election to benefit Mr. Trump.

As the Cheshire Cat would say,  "Curiouser and curiouser."

But wait, there's more.

Courtesy of McClatchy:

Investigators at the House and Senate Intelligence committees and the Justice Department are examining whether the Trump campaign’s digital operation – overseen by Jared Kushner – helped guide Russia’s sophisticated voter targeting and fake news attacks on Hillary Clinton in 2016. 

Congressional and Justice Department investigators are focusing on whether Trump’s campaign pointed Russian cyber operatives to certain voting jurisdictions in key states – areas where Trump’s digital team and Republican operatives were spotting unexpected weakness in voter support for Hillary Clinton, according to several people familiar with the parallel inquiries. 

Also under scrutiny is the question of whether Trump associates or campaign aides had any role in assisting the Russians in publicly releasing thousands of emails, hacked from the accounts of top Democrats, at turning points in the presidential race, mainly through the London-based transparency web site WikiLeaks. 

At this point I think that there is no longer any question that members of the Trump campaign colluded with the Russians to change the outcome of the 2016 election, the only questions remaining are how many of them were involved, and what exactly did they do?