INA § 237 establishes the classes of deportable aliens.

General grounds

Inadmissible Aliens

Present in violation of law

Violated nonimmigrant status or condition of entry

Termination of conditional permanent residence

Smuggling

Marriage Fraud

Criminal grounds

Crimes involving moral turpitude

Aggravated felons

High speed flight

Failure to Register as a Sex Offender

Controlled Substances

Firearms Offenses

Domestic violence

Human trafficking

Miscellaneous criminal grounds

Failure to Register

Document Fraud

False claims of citizenship

Security and related grounds

Espionage and sabotage

Criminal activity which endangers public safety or national security

Opposition, control, or overthrow of the US Government by force, violence, or other unlawful means

Terrorism

Foreign Policy

Nazis, Genocide, Torture, or Extrajudicial Killings

Violators of Religious Freedom

Recruiters of Child Soldiers

Unlawful Voters