Let's unpack this a bit.
First, Aswan is a dam in Egypt. The name of the accused couple as listed in the article you linked is "Awan".
Second . . . whaaaaaat? What evidence is about to be dropped? Against whom would the evidence be used? What charges would the evidence support?
So far as I can tell the article you linked says that Awan is ready to strike a plea deal on bank fraud charges . . . to the best of my cursory reading of the article there are no espionage charges to be plead to, at least not yet, by Awan or anyone else. And there's no suggestion in the facts provided in the article that any Democratic congress members are anything but victims of Awan . . . .
As best I can tell the article is making a small hill out of a mole's tunnel, and you're trying like heck to make more out of it than that.
When you've got something concrete, please feel free to return and report it. Until then, I have to polish my work shoes . . . .