Last Trading Day of Q3, Supply Chain Effect on Markets, D.C. on Wall Street's Radar, Merck's $11.5B Deal, Powell and Yellen Part Two, and Facebook on the Capitol Hill Hot Seat.

Squawk on the Street - Last Trading Day of Q3, Supply Chain Effect on Markets, D.C. on Wall Street's Radar, Merck's $11.5B Deal, Powell and Yellen Part Two, and Facebook on the Capitol Hill Hot Seat.