Ontario ad spat and federal-provincial tensions

Host Piya Chattopadhyay speaks with The Globe and Mail writer-at-large John Ibbitson and IPSOS Public Affairs global CEO Darrell Bricker about the most urgent challenges facing Canada, former Blue Jays manager Cito Gaston and baseball historian Bill Humber explore the significance of the team's World Series return, former White House press secretary Karine Jean-Pierre explains her decision to leave the Democratic Party and go independent, and Francis Plourde looks at the legacy of the so-called Unity Rally 30 years on.

Discover more at https://www.cbc.ca/sunday