Deportation
Deportation is expelling a person or group of people from a country or place. Reasons for deportation are when someone has unlawfully gained admission to the United States through marriage (marriage fraud); has a conviction of some criminal offenses; has falsified documents to enter the United States; participated in an activity that puts public safety at risk, or national security; has committed unlawful voting practices; and for being inadmissible to the United States due to immigration laws in effect upon entry into the country.
The Bureau of Immigration and Customs Enforcement issues an NTA (Notice to Appear) saying why the alien has to be removed or deported. It is served to the alien and then filed with the immigration court. After the hearing is schedules, a judge will determine if the NTA information is correct. If the information is, the alien will be ordered to be removed.