There is no distinctly native American criminal class save Congress.

Summary

This quote humorously suggests that the only true criminal class in America is Congress. It implies that politicians in the United States, particularly in the context of American governance, are the ones who engage in illegal and corrupt activities. By calling Congress the "native American criminal class," it satirically implies that they are the only group of individuals who are inherently inclined towards criminal behavior, while also serving as a critique of the political system.