What happened? Boone went over to Spain -- a country that we were close to war at some times, and an ally at others:
After the Revolutionary War, Boone worked as a surveyor along the Ohio River and settled for a time in Kanawha County, Virginia (now West Virginia). In 1792, Kentucky was admitted into the Union as the 15th state. Litigation arose that questioned many settlers' title to their lands. Boone lost all his property due to lack of clear title. In 1799, he followed his son, Daniel Morgan Boone, to Missouri which was then under the dominion of Spain. Traveling by canoe, he and his family paddled down the Ohio River to St. Louis.Boone is today considered an American Hero! Yet in his life it was Spain that gave him real honors -- a renumerative office and lands, and Spain with whom he cast his lot.
In 1800, Boone was appointed magistrate of the Femme Osage District in St. Charles County, Missouri [that is, Spanish Territory]. He received a large tract of land for his services. When Missouri was transferred to the United States as part of the Louisiana Purchase, Boone once again lost all his land, most of which was sold to satisfy creditors in Kentucky
Pollard gave his word of honor that he would not betray classified information to persons not allowed to receive it. He broke that word.
Also, Israel was the SECOND country he approached about becoming a spy. He sold out his loyalty to the high bidder.
Finally, he refuses (to this day) to assist in a damage assessment.