Marsch, 52, became the first American in history to manage Canada's men's national team following his appointment two years ago. He previously served as an assistant coach for the United States at the 2010 World Cup in South Africa, working alongside Landon Donovan, Tim Howard and Clint Dempsey.
Speaking at a press conference in Toronto on Thursday, the day before Canada's opening Group B fixture, Marsch reflected on his own adaptation to Canadian football culture.
"When I first came, I had to learn a lot about what it meant to be Canadian. Being a leader in this sport, I've always tried to create an environment where our differences make us stronger, not weaker."
He described the bond within his current squad in warm terms.
"From the moment I stepped into the environment with this team, I was impressed by how much they loved each other, how much they were drawn to each other and how much, even though there were differences, their back stories had similarities."
It was his comparison with his former employers that generated the headlines.
"Every one of these boys is incredibly Canadian and the pride they have in putting on the jersey, representing the country and hearing the national anthem. In the US sometimes we had to beg players to sing the national anthem. These guys belt it out to the top of their lungs because they want to show the country how proud they are to be Canadians and to represent what Canada is."
Marsch also addressed the scale of the occasion facing his players — Canada's first-ever home World Cup match, at BMO Field in Toronto.
"We all know a home World Cup is special. If you do this for a living, this is where you want to be. I came to Canada to lead them in a home World Cup; I wanted this responsibility. Nobody here is afraid of that. Actually, this is why we're doing it. Yeah, it's responsibility, yeah, it's pressure, but that's what we want, it's meaningful. I love sitting on that coach's box when the stadium's full, the pressure is on and everyone thinks you're an idiot."
Canada open their campaign against Bosnia and Herzegovina on Friday, before facing Qatar on June 18 and Switzerland on June 24 — a group that Canada, as co-hosts and with home advantage in their opening fixture, will feel offers a genuine route into the knockout rounds.
Marsch's comments are unlikely to go unanswered south of the border. But for a coach trying to build belief in a squad about to experience the biggest occasion of their footballing lives, a little noise from outside the camp may be exactly the distraction he wants.