Politicians Can Ex-Communicate Themselves...

Why can’t the American Bishops just do the same thing the Spanish Bishops are doing with the King of Spain?

http://www.lifesitenews.com/ldn/2009/dec/09120703.html

…Spain’s Catholic bishops warned that those politicians who vote in favor of the law will have excommunicated themselves, having put themselves in an “objective state of sin.” The bishops wrote that “while the situation lasts,” politicians who vote in favor of the law “may not be admitted to Holy Communion.”

However, the Spanish Constitution of 1978 stipulates that new laws must be promulgated by the king, who is head of state, but who now faces possible excommunication if he gives royal assent to the bill…