Owning an animal is legal in the United States! They are our food sources. Any attempt to prohibit that right is a Grave Human Abuse.
the Missouri Compromise unconstitutional because, among other reasons, an “act of Congress that deprived a citizen of his liberty or property merely because he came himself or brought his property into a particular territory of the United States, and who had committed no offence against the laws, could hardly be dignified with the name of due process of law.”
Simply owning an animal is not an offense against the laws of the United States. They are your property just as your home is your property.
A law or regulation that prohibits one from owning legal property is Unconstitutional.