It was "prominent slaveholders" who initially established the American Colonization Society, since this society was meant to strengthen the institution of slavery but separating free blacks from slaves.
The American Colonization Society was a group created in 1816 with the purpose of helping freed slaves to migrate to Africa, as it was believed in Africa former slavers could have more opportunities than in the U.S. This idea was supported mainly by important slaveholders that believed this idea would help them to remove free slaves from the U.S. and by some religious groups that believed in the U.S. free blacks could not be as free as in their ancestors land in Africa. This led to the creation of Liberia in the west of Africa, a colony where thousands of freed slaves migrated; however, many of them died as a result of disease and other condition in Liberia and many more opposed the American Colonization Society because they wanted to state in the U.S. and believed this was just a strategy for continue with slavery in the U.S. and avoid freed slaves fought for equality. Considering this, it can be concluded the Amecian Colonization Society was mainly established by prominent slaveholders.
A department that is traditionally focused on domestic issues could become involved in foreign policy-making because of two main reasons:
It can regulate a good or service given internationally. For example, it can be clothes or technological devices.
Foreign policy-making (or foreign relations), also regulates behavior that could have an international consequence. For example, it could be a business that contaminates the environment.
I will pick Bush v. Gore for my choice. If I had of been a Supreme Court Justice at this time, I would of ruled for Al Gore over George Bush. If the Supreme Court had ruled in his favor and let the recount resume, there would of possibly been a different president.