On July 13, 1863, it tried to enforce it.
It did not go well.
New York City draft riots
The New York City draft riots (July 13 to July 16, 1863; known at the time as Draft Week) were violent disturbances in New York City that were the culmination of working-class discontent with new laws passed by Congress that year to draft men to fight in the ongoing American Civil War. The riots were the largest civil insurrection in American history.
President Abraham Lincoln diverted several regiments of militia and volunteer troops from following up after the Battle of Gettysburg to control the city. The rioters were overwhelmingly working-class men, primarily ethnic Irish. They resented that the draft spared wealthier men, who could afford to pay a $300 commutation fee to hire a substitute.
Initially intended to express anger at the draft, the protests turned ugly. At least 100 black people were estimated to have been killed. The conditions in the city were such that Major General John E. Wool, commander of the Department of the East, stated on July 16, "Martial law ought to be proclaimed, but I have not a sufficient force to enforce it." The military did not reach the city until after the first day of rioting, when mobs had already ransacked or destroyed numerous buildings, including public buildings and homes of abolitionist sympathizers, many black homes, and the Colored Orphan Asylum at 44th Street and Fifth Avenue, which was burned to the ground. The children were not harmed ...
