why was a national law against slavery needed after 1863 even though the emancipation proclamation had been…

why was a national law against slavery needed after 1863 even though the emancipation proclamation had been issued?\nslavery was still widespread in the north.\nslavery was still widespread in the south.\nthe proclamation only applied to the confederacy.\nthe proclamation only applied to states in the union.
Answer
Brief Explanations:
The Emancipation Proclamation in 1863 was a wartime measure that only applied to Confederate - held territory. It did not abolish slavery in the border states that remained in the Union or in Union - controlled areas of the Confederacy. A national law was needed to fully and permanently end slavery across the entire United States.
Answer:
The proclamation only applied to the Confederacy.