President Trump�s former national security adviser, Michael T. Flynn, is expected to plead guilty on Friday to lying to the F.B.I. about a conversation with the Russian ambassador last December.
The plea would be the latest indication that Mr. Flynn was cooperating with the special counsel�s investigation into Russia�s interference in the 2016 presidential election. Mr. Flynn was scheduled to appear in federal court in Washington at 10:30 on Friday morning.