It's not about trust, but rather shifting the focus and projection. Russia interfered with our election and Trump's ego and/or guilt will not allow him to admit it. IF he truly wanted to get in front of this investigation and has nothing to hide, he wouldn't keep trying to undermine it.
Actually every nation in the world attempts to influence elections in other nations, including the US. Obama tried to prevent the re-election of Netanyahu in Israel. And Russian influence was so piddling in the 2016 election that it isn't funny. Wow. They ran a total of $100,000 worth of ads in a national election. Do you realize how small a percentage that is of the total spending on advertisement for all candidates? It's most likely less than 1/10 of 1%, or less. That amount of ads could not have made a difference in the election as such a small percentage of the population would have seen them it's ridiculous.
You want to see real Russian influence on our government and politicians? Take a look at the Obama administration. Hillary, while she was secretary of state sold the Russians 20% of our nation's total supply of uranium. You know, the stuff atomic bombs are made from. And lo and behold what happened? A bank involved in the transaction gave her husband $500,000 for a 20 minute speech. What could he have said in 20 minutes that is worth a 1/2 million dollars? And, the Russian and Canadian companies involved in the sale and transfer of the uranium to Russia donated $143 million to the Clinton Foundation. Obama knew about this. The FBI was involved in this too under both Comey and Mueller. While Mueller, who is now investigating Trump for collusion, was the head of the FBI he took a FBI plane to Russian to deliver uranium samples so the Russians could test it. The FBI was investigating this sale while it was going on, and has evidence that there was fraud, blackmail, and criminal conspiracies going on. They had an undercover agent at the heart of this, and then forced him to sign a NDA to keep him from talking. That NDA was just recently removed and he is to testify before Congress on what he knows in the near future.
If Trump has colluded with the Russians it is peanuts compared to what the Obama administration took part in. That was treasonous for it undermines the very security of our nation. That was government influence for sale, blatantly. And the DNC and Hillary's campaign talked to the very same people Trump's people did. If Trump was colluding for talking to those people so was Hillary and the Democrats.
Now, you want to tell me that this isn't a witch hunt? You want to tell me this isn't a smoke screen to cover up blatantly illegal activity by the previous administration?