Trump 2.0 raises "worrisome" US-Canada border concerns: Former Canadian ambassador

David MacNaughton, former Canadian ambassador to the U.S., shares his biggest concerns about a possible Donald Trump return to the White House. Especially where the two countries share a "very, very long undefended border." Global's Mercedes Stephenson has more. For more info, please go to https://globalnews.ca/news/10846946/us-election-canada-impacts-violence-chaos/ Subscribe to Global News Channel HERE: http://bit.ly/20fcXDc Like Global News on Facebook HERE: http://bit.ly/255GMJQ Follow Global News on X HERE: http://bit.ly/1Toz8mt Follow Global News on Instagram HERE: https://bit.ly/2QZaZIB #GlobalNews #Trump #Canada