As I sit here thumbing through my copy of the Texas Penal Code I see criminal activity listed under the headings Offenses against the person, Offenses against the family, Offenses against property, Offenses against public administration, Offenses against public order and decency and Offenses against public health, safety and morals. Nowhere under any of these headings do I see where it's a crime in the state of Texas for a non-citizen to be here without the blessings of Congress or the Department of Homeland Security.
If someone crosses the border without permission they are breaking federal law - but they are not violating the laws of the state of Texas.
Having such language included on plea papers could expose a defendant to criminal liabilty for perjury (if he swears he is here legally when he's not) or for violating federal law (if he admits he is not here legally). The other option is for the criminal justice system to break down at the point judges will not accept altered plea papers or defendants will not sign them.
Illegal immigration has always been part of the fabric of this American life. People come to this country - some risking their lives - for two things: the chance to better themselves and their families and for the opportunities afforded by the freedom and liberty espoused in the Declaration of Independence and codified in the Bill of Rights.
Please note, Ms. Lykos, that the word citizen is not be found in the Bill of Rights.