To the Editor:

Re “F.B.I. Investigated if Trump Worked for the Russians” (front page, Jan. 12):

The F.B.I. had enough evidence to open up a counterintelligence investigation of the president of the United States. This is a mind-boggling pronouncement. That the investigators considered the president a possible “threat to national security” is in and of itself a startling proposition.

We should all take stock of the state of our nation. The American people need to know whether their president is a Russian asset. We need to know that our nation is secure. We need to know if the president, whether wittingly or unwittingly, is acting against American interests and in the national interests of Russia. Did he conspire with a foreign entity to manipulate our electorate?

We need answers, and we need them now. Our nation is in peril, and we cannot wait patiently for investigations to play out. Therefore, it is incumbent upon the special counsel, Robert Mueller, to assuage our fears, or confirm them, by giving us a clear conclusion to his investigations in the very near future.

Ellen Silverman Popper

Whitestone, Queens

To the Editor:

Why are people surprised that the F.B.I. investigated whether President Trump was working for the Russians? Of course the agency would be suspicious, and it is its job to investigate when suspicious.