And I suspect that's right, but the "politically correct" media will not tell us the real story until long after they've wrung out all the anti-gun propaganda value from this story they can.
I’ve been looking for sources besides Bryan Suits but so far the Daily Mail is still the only other place that mentions the possibility of a Russian adoption:
“Lynda and her husband, who died of a heart attack several years ago, adopted Cruz and his biological brother, Zachary, after the couple moved from Long Island in New York to Broward County. Cruz was an infant when he was adopted. It’s unclear if he was adopted from the U.S. or aboard. Adopted children from abroad sometimes have issues adjusting due to neglect in their orphanages, especially children from Russia.”