Latest / The Atlantic Slave Trade: Empire Built on Human Suffering — Fexingo History / The 1820 Slave Trade Act: How the US Made Slave Trading Piracy
Transcript
- Lucas: Luna, we've covered a lot of ground in this series — mutinies, rebellions, court cases, the Middle Passage itself. But there's a piece of legislation that changed the legal framework for the Atlantic slave trade in a dramatic way, and we haven't touched it yet. Luna: Which one? Lucas: The Slave Trade Act of 1820. It classified the international slave trade as piracy — a capital crime, punishable by death. And it's a fascinating story because it shows how American politics tried to grapple with the slave trade without confronting slavery itself. Luna: So they made trading slaves equivalent to being a pirate on the high seas? Lucas: Exactly. And the law is still on the books today, by the way — it's codified in Title 18 of the U.S. Code. But back in 1820, it was a compromise. The domestic slave trade was booming, but the international trade was increasingly seen as barbaric. So Congress could condemn it without threatening the institution of slavery at home. Lucas: If you've been stepping into history with us episode by episode, you might have noticed that we don't have sponsors or ads. The way these stay ad-free is listener support — buy me a coffee dot com slash fexingo. If today was actually useful to you, that's the way to keep it going. Luna: Yeah, it's a small thing that makes a big difference for us. Lucas: So, the key figure behind this law was a Virginia congressman named Charles F. Mercer. He was a Federalist — rare in Virginia — and a member of the American Colonization Society, which wanted to send free Black Americans to Africa. Luna: Wait, so his motivation wasn't purely abolitionist? Lucas: Not entirely. The Colonization Society had a mixed bag of motives: some genuinely believed Black Americans would never achieve equality in the U.S., others saw it as a way to remove free Blacks who they thought threatened slavery. But Mercer himself was also genuinely horrified by the slave trade. He had seen slave ships firsthand, and he pushed for this law for years. Lucas: The bill passed in 1820, signed by President James Monroe. It made anyone found guilty of participating in the slave trade subject to the death penalty. But here's the catch — it only applied to the international trade, not to the domestic buying and selling of enslaved people within the United States. Luna: So it was a way to look moral without actually ending slavery. Lucas: Exactly. And enforcement was spotty. The U.S. Navy only had a small squadron off the coast of Africa, and they rarely captured American slave ships. For decades, the law was almost a dead letter. Then came the case of Nathaniel Gordon. Luna: Who was he? Lucas: Nathaniel Gordon was a ship captain from Maine. In 1860, he was caught off the coast of Africa with nearly 900 enslaved people packed into his ship, the Erie. It was a clear violation of the 1820 act. He was tried in New York, convicted, and sentenced to death. Luna: And he was actually executed? Lucas: Yes. On February 21, 1862, Gordon became the only person in U.S. history to be executed for slave trading under the 1820 act. President Lincoln refused to commute his sentence, despite appeals. It sent a message — but by then, the Civil War was already underway, and the international slave trade had largely been shut down. Luna: So the law was mostly symbolic? Lucas: In practice, yes. But symbols matter. The 1820 act established a clear legal principle: the slave trade was a crime against humanity. It was used in later international treaties, and it even came up in debates about the Nuremberg trials. For its time, it was a bold statement — even if it was deeply hypocritical. Lucas: There were earlier attempts, too. In 1807, the U.S. banned the importation of slaves, but that was a simple ban with fines, not a capital crime. The 1820 act raised the stakes. And it wasn't just about the death penalty — it also authorized the president to use the Navy to enforce it. Luna: Did other countries follow suit? Lucas: Britain had already declared the slave trade piracy in 1811, and they pressured other nations to do the same. The U.S. act was part of that wave. But enforcement was a joke for decades. The American Colonization Society even tried to set up a colony in Liberia partly as a deterrent — a base to intercept slave ships. Lucas: One interesting footnote: the law was challenged in court. Some argued that slave trading wasn't piracy under international law, so the U.S. couldn't unilaterally declare it so. But the Supreme Court upheld the law in the 1820s. The logic was that piracy is defined by municipal law as well as international custom. Luna: So the U.S. could make its own definition. Lucas: Right. And that's what they did. The law remained on the books, and it was used sporadically. In the 1840s, a few slave traders were executed under it, but most got off with light sentences or acquittals. Juries were often sympathetic to the defendants, who were seen as just doing business. Lucas: But the most famous case — besides Gordon — was the trial of the slave ship Wanderer in 1859. That ship illegally brought 400 enslaved Africans to Georgia. The captain and crew were prosecuted under the 1820 act, but they were all acquitted by a Southern jury. The law was only as strong as the people enforcing it. Luna: It really shows how divided the country was. Lucas: Exactly. The law was a Northern compromise — it let them claim moral high ground without challenging the Southern economy. And in the South, it was seen as an overreach of federal power. The Civil War ultimately resolved that tension, but the 1820 act remains a fascinating piece of legal history. Lucas: One last thing — the act also had a provision that allowed the president to send captured slave ships to Africa and return the captives. That was the origin of the 'recaptive' settlements, like Liberia. So it wasn't just punitive — it had a humanitarian goal, however imperfect. Luna: I want to read more about Charles Mercer now. He seems like a complicated figure. Lucas: He is. He was a slaveholder himself, but he opposed the slave trade. That contradiction runs through so much of American history. The 1820 act is a monument to that contradiction — a law that condemned the trade but protected the institution.