I think you are conflating two different models. The Champion is a model built (as far as I know) on a "standard" 1911 receiver. The EMP is SA's shortened model, which compared to a "standard" 1911 has a vertical slice about an eighth of an inch wide taken out through the magazine well portion of the frame.
EMP 4" Champion is a very new addition to the Springfield stable. Read somewhere that it's USA made but couldn't determine if frame was from Brazil. Need to do more search.
I didn't know that.The frames have not been made in Brazil for several years. All 1911 frames have been made in the USA for several years.