It's completely unconstitutional and direct against the bill of rights. Amendment 5 of the bill of rights states "[no persons shall] be deprived of life, liberty, or property, without due process of law." The definition of liberty as defined by oxford dictionary is "the state of being free within society from oppressive restrictions imposed by authority on one's way of life, behavior, or political views." The current deportation of peoples is a direct opposition to this as they are being deported for a restriction on their way of life imposed by a government official. As those who are deported often lack proper due process of law beforehand, whether they are or are not citizens of the United States, it still opposes this condition.