Fowler that his flatboat loaded with produce for the New Orleans market
had been seized for refusal to pay duties at Natchez. A few months
later, Thomas Amis, a North Carolina trader, reported the seizure of
his stock at the same point, consisting of 142 Dutch ovens, 53 pots
and kettles, 34 skillets, 33 cast boxes, 3 pairs dog irons, a pair of
flat irons, a spice mortar, a plough mould, and 50 barrels of flour.

Complaints of some of these seizures officially reached Congress.
Countless tales of other infringements upon American rights on the
lower Mississippi were told among the settlers along the western slope
of the Alleghanies, arousing them to the conviction that they were
being sacrificed by the commercial interests of the Atlantic plain who
wished to preserve a profitable trade with Spain. Gardoqui had arrived
at the seat of government in 1785 as the first representative of the
Spanish King. He was determined, as he said, to make the lower
Mississippi a "bone of contention" in negotiating the long-delayed
treaty with the United States. Not much agitation on his part was
necessary. The western people were wrought up to the determination to
take matters into their own hands, if necessary, to procure an outlet
to Europe for their goods. The rumour that Jay, Secretary of Foreign
Affairs, had approved to Congress the suggestion of Gardoqui, that the
river be closed for ten years as the price of a commercial treaty,
drove them to the point of forcible resistance. The Spanish also
continued to occupy posts on the American side of the Florida boundary
line, but this was a grievance only as they were accused of arousing
the Indians to hostility against American settlers. In truth, these
western pioneers formed a long arm of people thrust out between Indians
under British dominance on the north and Indians under Spanish control
on the south.