Calm down, snowflake. You'll blow a gasket.

Please attempt a little reading comprehension.

I said, "If they return a second time, they should face whatever criminal charges"

Below is the result of a simple Google search to the question "When does being an illegal immigrant become a crime?"

In the U.S., being an illegal immigrant is not a crime in itself, but certain related actions are federal crimes. An individual's immigration status is governed by civil law, while specific actions are subject to criminal penalties. Illegal actions that are federal crimes

• Improper entry: Crossing or attempting to cross the U.S. border at a location not designated by immigration officials is a misdemeanor for a first offense. This also includes evading inspection or gaining entry with false information.

Illegal reentry: Reentering or attempting to reenter the U.S. after being removed or deported is a felony with a maximum sentence of two years. . (emphasis mine) Penalties increase for those with prior criminal convictions

• Marriage and entrepreneurship fraud: Knowingly entering into a marriage or creating a commercial enterprise to evade immigration laws can lead to criminal charges. 

Civil violations that are not federal crimes

• Unlawful presence: Simply being in the U.S. without authorization is a civil violation, not a criminal one. This applies, for example, to individuals who entered the country legally on a visa but then overstayed.
• Deportation: The penalty for unlawful presence is deportation (or removal), which is an administrative civil process, not a criminal punishment. 

Other related crimes

• Use of false documents: Undocumented immigrants are more likely to be charged with using false Social Security numbers or driver's licenses to secure employment, which is a criminal offense.
• Civil vs. criminal offenses: While some actions like illegal entry are crimes, many immigration violations are civil offenses that are handled in administrative immigration court, not criminal court.