A White House spokesman said Monday that President Trump is “evaluating the situation” regarding national security adviser Michael Flynn over his pre-inaugural contacts with Russian officials. (See the editorial nearby.) While the President is at it, how about asking if the spooks listening to Mr. Flynn obeyed the law?

Mr. Flynn is a retired general who ran the Defense Intelligence Agency, so surely he knew that his Dec. 29 call to Russian ambassador Sergey Kislyak would be subject to electronic surveillance. U.S. intelligence...