Returning to the private sector in Toronto, to be replaced on an acting basis by his deputy Kirsten Hillman.
Ottawa holding its present course in response to the US president’s message.
Says Canadian negotiators are prepared to put in the long hours to help make it happen before the end of August.
Canada’s US ambassador wants quick deal but won’t take bad one.
US lawmakers pressed to pass a law, Parliament’s public safety committee sitting on it for several months.
$2.4 billion goods traded, 35 states and 9 million US jobs depend on cross-border trade