USA HISTORY

Detailed explanation-1: -The U.S. Supreme Court ruled in the Dred Scott decision that Congress had exceeded its authority in the Missouri Compromise because it had no power to forbid or abolish slavery in the territories west of Missouri and north of latitude 36°30′.

Detailed explanation-2: -In Dred Scott v. Sandford (argued 1856–decided 1857), the Supreme Court ruled that Americans of African descent, whether free or slave, were not American citizens and could not sue in federal court. The Court also ruled that Congress lacked power to ban slavery in the U.S. territories.

Detailed explanation-3: -In 1854, the Missouri Compromise was repealed by the Kansas-Nebraska Act. Three years later the Missouri Compromise was declared unconstitutional by the Supreme Court in the Dred Scott decision, which ruled that Congress did not have the authority to prohibit slavery in the territories.

Detailed explanation-4: -Chief Justice Roger Taney and six other Justices ruled that Missouri Compromise was illegal because Congress had no power to prohibit slavery in the territories, and slave masters were guaranteed property rights under the Fifth Amendment.

Detailed explanation-5: -In 1868, the Fourteenth Amendment overturned the Dred Scott decision by granting citizenship to all those born in the United States, regardless of color.