John Heilemann on Clinton email probe, Trump's trade rhetoric
Four recent polls show Hillary Clinton leading over Donald Trump with margins ranging from two to 12 points. John Heilemann, managing editor of Bloomberg Politics and co-host and executive producer of Showtime's "The Circus," joins "CBS This Morning" to discuss why Bill Clinton's private meeting with the U.S. attorney general does the Democratic presidential nominee "no good," while Donald Trump's trade talks are "politically effective."