ABC's Jon Karl: 'Is There Anyone the President Wouldn't Shake Hands With?'

Karl “Is there anybody the President would not…is there any world leader the President would not shake hands with? I mean, if Assad had been on that stage, if Kim Jong-Un had been on that stage? I mean I’m trying to gauge the principal, he shook hands with everybody on the stage. I mean, is there any… anybody he wouldn’t?”