Yes, due process is only available to citizens. That is one of the benefits of being a citizen of a nation."
"No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.
Edit: My mistake, it does affect non-citizens too, but if the laws of the land are being followed, and they have broken them, then they can be removed without a trial.