Is it time for an independent investigation on Russian influence in the election and the Trump administration?

According to a story titled Trump administration sought to enlist intelligence officials, key lawmakers to counter Russia stories Which was published a few hours ago in the Washington Post, the Trump administration has tried to compromise the FBI, Senate, and House investigations and succeeded in getting the chairs of the Senate and House committees to speak to the press on their behalf.

Since both Senator Richard Burr (R-NC) and Representative. Devin Nunes (R-CA), chairs of the committees doing the investigating, have spoken out to the media on issues related to the ongoing investigations as requested by the White House, are those investigations compromised? Would any result be believable?

It seems to me that the best solution would be an independent investigation such as a special prosecutor or independent commission on Russian influence in the election and the government in general? The investigation should be thorough and as nonpartisan as possible.