CNN: White House Chief of Staff involved in pressuring NOAA to disavow hurricane forecasters who contradicted Trump; Trump talks to senators about new gun control measures, says "I think progress is being made"; Democrats divided over impeachment ahead of vote setting ground rules for key panel's investigation; U.S. Senators confront Saudi crown prince; Challenger taking on Trump ally Netanyahu in closely-watched Israeli election next week; 9/11 remembered via Knit