An American citizen born and raised in California is unsettled after receiving an e-mail from the US Department of Homeland Security ordering him to leave the country “immediately.”

Aldo Martinez-Gomez received the DHS notice on April 11, threatening “criminal prosecution” and fines if he does not depart within seven days.

Martinez-Gomez works full-time assisting immigrants in court for a non-profit and believes his advocacy work may have placed him on the government’s radar.