Toussaint-Louverture was the leader of the Haitian Revolution. The revolution was influential in slave rebellions in the US. It inspired a temporary increase in slave rebellions in the US, and this scared Southern plantation owners
It prompted Napoleon to sell the Louisiana Territory to the United States
Explanation:
The L'Ouverture's revolution also known as the Haitian revolution benefit the United States. The Revolution started in 1791, led mostly by revolted slaves they demanded the freedom that the French defended on the French Revolution. The French realized that they would lose Saint-Domingue as a colony which would be a disaster to the French economy because the island was filled with sugar plantations.
When the French lost control of the Island Napoleon decided to sell Louisiana because he saw it was a land with no strategic use. The Louisiana Purchase was signed on April 30th, 1803.
I believe you could be referring to the spouse of the President, also called the First Lady of the United States. The spouse of the President is non-elected and not confirmed by the Senate. Although she does not have real power, she can be very influential and has a prominent presence in the live of the nation.
Immigration policies refer to a national sphere because it affects the country as a whole, so all changes and the formulation process of an immigration policy must come from a national sphere and the whole country needs to live by these laws and policies.