I think hacking is a problem, not just by Russia but even more by China, and of course there are others. Everybody is trying to hack everybody else, friend and foe alike.
I don't have a problem with investigating foreign interference in US elections, either by Russia or anybody else, but I find the current partisan hatchet job, the likely intent of which is to distract, harass and obstruct the Trump presidency, to be dishonest and ultimately counterproductive.
The really big problem with foreign interference in US elections is in campaign finance. But no one is much concerned about that.
If you are really concerned about outside influence and interference in our elections, then concern yourself with the hacking, lobbying and campaign financing. If you really think that these problems only, or primarily, concern Trump, Russia and the election campaign of 2018 then you are blinded by partisanship and being very foolish.