This is already very close to the darker times of USSR. There, a person who have talked to a foreigner on a street was automatically considered a foreign spy. Thousands of people were convicted and imprisoned just because of this.
Still, it seems that you have a part missing. No court would take all these evidence-free assumptions and isolated facts as a proof of guilt. To get the missing part, you should follow USSR practices one step further. Arrest Flynn and apply some torture to him. Then he’ll eagerly sign a paper where he’ll declare himself a spy, and also accuse Trump of everything you’d like. Boom! Problem solved.