Final answer:
The importation of slaves was banned by Congress starting in 1808.
Step-by-step explanation:
True, Congress banned the importation of slaves beginning in 1808. The importation of enslaved Africans was permitted by the U.S. Constitution until 1808, and after that date, Congress passed a law prohibiting the international slave trade. This law aimed to gradually reduce the number of slaves in the United States, although it did not immediately end the institution of slavery.
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