Butler was no abolitionist, but the three slaves presented a problem. True, the laws of the United States were clear: all fugitives must be returned to their masters. The founding fathers enshrined this in the Constitution; Congress reinforced it in 1850 with the Fugitive Slave Act; and it was still the law of the land — including, as far as the federal government was concerned, within the so-called Confederate states. The war had done nothing to change it.