According to Urrea are undocumented immigrants a burden to our system?

Yeah they definitely are, even though they shouldn't be. They're only a burden because of how our system is so screwed up and there's so many people trying to get in.

in the story "marionettes inc," in the last line of the story, braling two is referred to by the narrator as the "someone." what does this new identifier imply and how does it add to the drama of the closing scene?