Congress, on the other hand, is the public investigator "for the people." When Congress focuses it's "Russia" attention on only the Trump campaign, then Congress has a real problem.
There is no way Congress can credibly claim to be investigating Russian interference, without investigating Russia attempts vs. Hillary, Bernie and others. The fact that the GOP-lead Congress and Committees are focusing on the Trump campaign to the exclusion of all others is proof that Congress's real target is not Russia, it is Trump.
The only way Trump, and America, will survive is if Trump starts making accusations about all of the corrupt activity and names names. Eventually he’s going to have to come right out and ask for his supporters for help.