4. Investigating the investigation. Many Republicans, long convinced that the Trump campaign did not conspire or coordinate with Russia, have instead sought to uncover the events surrounding the decision by U.S. law enforcement and intelligence agencies to investigate the Trump campaign in 2016. It’s been hard finding out what happened. Rep. Devin Nunes, when he was chairman of the House Intelligence Committee, shook loose a lot of information, but much remains unknown to the public. Now, those Republicans are counting on an investigation by Justice Department inspector general Michael Horowitz to reveal more. And they are hoping that President Trump will declassify documents that could shed new light on the matter. One place they are not looking for answers is the Mueller report.