Can ICE raid a house without a warrant
"Officers must have a warrant signed by a judge to enter your home. ICE “warrants” are not signed by judges; they are ICE forms signed by ICE officers and they do not grant authority to enter a home without consent of the occupant(s)."
What to say if ICE shows up at your door?
"Do not open your door unless ICE shows you a judicial search or arrest warrant naming a person in your residence and/or areas to be searched at your address. If they don't produce a warrant, keep the door closed. State: “I do not consent to your entry.” If agents force their way in, do not resist."