Libby Osgood is doing good work at the Mexico-US border, and writing about it.
Today, in part:
Halfway across the bridge to Mexico, while relaying my exciting adventure to another participant, I realized I left my passport in the car! I was stuck between two countries with a car full of food for Mexico! Luckily the bridge guard had seen me each day and kindly bent the rules, allowing me to return (definitely not allowed on the one-way bridge). I sprinted to the car, sprinted back, prepared to pay my dollar again but was welcomed in instead, and caught up with the team. My ashes were now bathed in sweat from running, but the coolness of the air was gone. I can’t say that i was scared at any point, but looking back, I should have been.