Respuesta :
Answer:
He ruled african americans were and could not be citizens :)
Explanation:
Answer:
That all blacks could never be U.S citizens.
Explanation:
In 1857 the U.S supreme court declared that no African-Americans, free or enslaved could be U.S citizens. At the time the chief justice was Roger B. Taney and this was during the Dred Scott court case
Please mark brainliest ;)