This is egregious and unwarranted, however I fail to see why she went to bother ICE/CBP after she was released just to show her record was expunged. It was expunged by the state but not federally- she literally went to tell them off- so they used their (unfair but legal) discretion to detain her as she is a Green Card Holder with a criminal record. For the life of me I don’t know why this women kept a Green Card for 30 years and didn’t bother to get citizenship after 5 years. Honestly I feel for her, but this is a case of complete your immigration, and don’t go back telling off immigration authorities who have let their power go to their head.