I am actually surprised it has taken this long, he must be impeached soon surely?
Republicans control both houses, there needs to be a vote in one then he gets tried in the other. That is unlikely t the moment. What they are waiting for is the half term elections in November, if the houses switch control then it opens up the option to impeach him and put him on trial. The vote just needs a majority of 1, so 51 for impeachment 49 agaiinst, the Republicans have 51 seats. The trial needs a 2/3rds vote saying guilty IIRC. He would be replaced by the Vice President.