Behind the lack of handshake at start of presidential debate
Before Sunday night's presidential debate, we got an inside look at the preparations with veteran political strategists Dan Senor and Michael Feldman, including the psychology behind the opening handshake. That handshake, however, did not happen Sunday, setting the stage for a tense and feisty confrontation. Senor and Feldman join "CBS This Morning" with their reactions to the debate.