Why were Americans, including President Jefferson, unable to to treat Haitians as "brave and courageous human beings"?

Answer:The Haitian Revolution and the subsequent emancipation of Haiti as an independent state provoked mixed reactions in the United States. This led to uneasiness in the US, instilling fears of racial instability on its own soil and possible problems with foreign relations and trade between the two countries.

US president Thomas Jefferson realized the revolution had the potential to cause an upheaval against slavery in the US not only by slaves, but by white abolitionists as well. Southern slaveholders feared the revolt might spread from the island of Hispaniola to their own plantations. Against this background and with the declared primary goal of maintaining social order in Haiti, the US attempted to suppress the revolution, refusing acknowledgement of Haitian independence until 1862.

The US also embargoed trade with the nascent state. American merchants had conducted a substantial trade with the plantations on Hispaniola throughout the 18th century, the French-ruled territory providing nearly all of its sugar and coffee. However, once the Haitian slave population emancipated itself, the US was reluctant to continue trade for fear of upsetting the evicted French on one hand and its Southern slaveholders on the other.

Against this, there were anti-slavery advocates in northern cities who believed that consistency with the principles of the American Revolution - life, liberty and equality for all - demanded that the US support the Haitian people.