The guilty charges against Manafort and guilty plea by Cohen in which he implicated Trump should definitely create some new tensions in Washington.

The worst hour of Donald Trump's presidency just happened
https://www.cnn.com/2018/08/21/polit...ump/index.html

Manafort guilty verdicts will put new pressure on him to cooperate with Mueller’s Russia probe
http://www.foxnews.com/opinion/2018/...sia-probe.html

Turley on Cohen Plea Deal: Trump Could Be 'Unindicted Co-Conspirator' on Campaign Finance Violation
http://insider.foxnews.com/2018/08/2...rator-campaign

I'm really curious into what the next few days will bring, Trump was already in lash out mode from the Omaraposa book, the continuing security clearance revokal backlash. He doesn't seem to take bad news well and together with Guliani are certainly moving the goalposts for his 'innocence' on a daily basis. Will he do pardons? Fire more people?
The snowball effect of everything happening will run right into the election cycle and no doubt have a massive effect on state and local politics.