Taal's lawyers have termed the immigration notice a violation of free speech.
Taal had earlier sued to stop the deportation of protesters, alleging he was doxxed.
The US government email said, "ICE invites Mr. Taal and his counsel to appear in-person at the (Homeland Security Investigations Office) in Syracuse at a mutually agreeable time for personal service of the (Notice to Appear) and for Mr. Taal to surrender to ICE custody."