Chalupa was all over the dossier machinations, and, IIRC, thick with Nancy Pelosi (& other Dems in Congress.) I also think she was connected with Vaselnetskaya (sp?) of Trump Tower infamy. Her faction of Ukrainian power was pro-Putin.
It all fits - like a waterboarding.
Ya gotta be suspicious of a family that is named after a Mexican street-snack.
KEK