While the Dodge nameplate is still American, the Dodge ProMaster is actually produced at the Saltillo Truck Assembly Plant in Saltillo, Mexico. This is in contrast to RAM trucks, which are currently produced in Flint, Michigan.
The reason that the ProMaster is made in Mexico isn’t just about production costs; it also has to do with capacity. When Fiat purchased Dodge in 2014, it moved production to Mexico for several models to increase overall manufacturing capabilities. However, the ProMaster is still held to the same quality standards as models built in America, so don’t stress.