Being open-minded and able to understand others' points of view and way of working doesn't correlate very well with traveling.
In fact, if anything, in my experience it has the reverse effect because people who travel feel like they know shit after having been moderately in another culture and pretend as if they now understand profound things when it's hardly the case.
Being able to travel is expensive and to get there you need to have some sort of compliance with the dominant ideology, so it's like asking people to let of what actually allowed them to do that in the first place.
On top of that, we don't need more people burning fuel to travel for pleasure to satisfy their desire for new things and social status. It doesn't bring anything more than personal satisfaction; ideas can travel in plenty of ways...
Also heavily agree that Americans need to travel more. Most Americans have absolutely no idea how far behind this country is in so many ways.