There are particular amendments to the Constitution that corporate attorneys will claim belong to corporations now. The 14th Amendment was the first one, and it guaranteed equal protection of the law and due process of law. The 14th Amendment was adopted after the Civil War. The 13th Amendment ended slavery, and the 14th Amendment — at least as I read it, and many folks read it — was intended to guarantee equal protection of the law and due process of the law to those freed slaves — and, by the way, to everyone, cause it didnt mention that it was just freed slaves.
The courts looked at the word "person" and the second clause of that amendment, and determined in 1886 that the word "person" also referred to corporations as well, and in that particular case, the Santa Clara case, decided that corporations had the 14th Amendment protection of equal protection of the law, which was the foot in the door, and now we see that corporations are recognized to have First Amendment free speech protections — that was first decided in the Bilotti case of 1978; it wasnt the Citizens United case that actually opened that can of worms; that was just the cherry on top.
Read the whole post here: Banning Corporate Personhood: How Communities Are Taking the Law Back from Big Companies | | AlterNet.