Like I said before the NSA and FBI are monitoring foreign communications, which only requires picking up one foreign party, when the other one is a US entity it's legal...was trump tower bugged, No, it was the foreign entity call, next question, was there collusion between the trump camp and the foreign entity to sway our election...
^^There have been several links posted in this thread. I'll post a couple more. Wikipedia – usually diligently publishes relatively comprehensive digests of officially approved versions of events.
So, yes, it’s true that Trump has failed to land a business venture inside Russia. But the real truth is that, as major banks in America stopped lending him money following his many bankruptcies, the Trump organization was forced to seek financing from non-traditional institutions. Several had direct ties to Russian financial interests in ways that have raised eyebrows. What’s more, several of Trump’s senior advisors have business ties to Russia or its satellite politicians. “The Trump-Russia links beneath the surface are even more extensive,” Max Boot wrote in the Los Angeles Times. “Trump has sought and received funding from Russian investors for his business ventures, especially after most American banks stopped lending to him following his multiple bankruptcies.” What’s more, three of Trump’s top advisors all have extensive financial and business ties to Russian financiers, wrote Boot, the former editor of the Op Ed page of the Wall Street Journal and now a senior fellow at the Council on Foreign Relations.
Russian Born Trump aide Boris Epshteyn leaving White House, officials say
Mr. Epshteyn, known for his argumentative, badgering style on TV, was a spokesman for the presidential inaugural committee. He grew up in Moscow, and met Eric Trump at Georgetown University.
Remember boys and girls,
Carter brought Reagan (thank God) and Buster brought Trump. 
