To the Editor:

Re “An Article of Impeachment Against Trump,” by David Leonhardt (column, Jan. 29):

We often say it is the cover-up and not the underlying crime that results in the downfall of those who abuse their office. That may be the case, but only because the cover-up may be a bit easier to prove.

President Trump fears the F.B.I. and the Mueller investigation because he knows more of what he has done than we do. Given our politics at the moment, unless those investigations can ultimately give us a clearer picture of what has gone on, he may survive in office. Those are the stakes before us.

Despite what many legal scholars may opine, there is nothing in the Constitution that says that a sitting president cannot be indicted in a criminal court. Impeachment and indictment are not mutually exclusive. An indictment of a sitting president may be exactly what we need to wake us from the nightmare we are sleeping through.

BRUCE NEUMAN, WATER MILL, N.Y.

To the Editor:

Re “Justice Under Attack: Why Does Mr. Trump Fear the Truth?” (editorial, Jan. 27):

Your editorial and David Leonhardt’s column cite convincing evidence to suggest that President Trump committed the crime of obstruction of justice. Mr. Leonhardt cites as precedent the articles of impeachment against Presidents Richard Nixon and Bill Clinton. However, neither stresses the most crucial element: What is being obstructed is the investigation into the corruption of our democracy by a hostile foreign power.