Human Rights vs. Corporations

We need to overturn Citizen United. It shouldn't have been necessary! But due to a corporate controlled Supreme Court, let's propose the following amendment to the Constitution of the United States:

The rights established by this Constitution and the laws of the United States of America are exclusively the rights of living, breathing humans, citizens of this country or residing therein. No corporation or other type of association or organization can have the status of a "legal person" and thus cannot derive rights from such status.

These organizations have no permanent, constitutionally protected rights, though they may have such powers or immunities as are explicitly granted to them by legislative actions at either the federal or the state level. These powers or immunities may be modified or removed by later action of the same legislative bodies. In no case can these powers or immunities override the constitutionally protected rights of human beings.