Can someone help me report an illegally staying alien in Nevada area?

She entered the US misrepresenting herself, declaring she is the private staff of diplomatic couple when in fact she has been terminated from that position a month before. She is using a red (official) pport from Asian country. I only have a car's plate number as clue,maybe ICE can start the trace from there? PM me, anyone who values respect for American immigration laws and detests illegal aliens who think it is their right to enter the US, steal American jobs and enrich themselves. I also welcome opinion from the opposite side (those who loooove to harbol illegal aliens). Ciao!