Mazda3 Production Location
Well the Mazda6 replaced the 626, so they continued production at the same plant in the US. I imagine the 3 will be produced at the same place the Protege/Protege 5 was.
Building the Mazda3 in the US would mean either building it alongside the Focus (which a lot of people wouldn't like), or building a new plant.
They couldn't build it alongside the 6 at AutoAlliance Int'l, there's just not enogh room. Along with the 6 hatch and wagon, the 2005 Ford Mustang is scheduled to be built there soon.
2006 5-Door - Copper Red MTX Touring