Lawmakers want to hear more from Comey
Chaffetz's request to the F.B.I. for documentation
Timeline of events leading to Comey's firing
What is Obstruction of Justice? An Often-Murky Crime, Explained.
Trump Defends Sharing Information on ISIS Threat with the Russians
Israel is said to be the source of ISIS information
Putin offers "record" of Trump disclosures to Russian envoys
Republican David Brooks's column on Trump
