Criminals get deported- NO MERCY.
We're all tickled to hear you say that! Failing to abide by immigration laws is a crime. Deport ALL of them.
Edit: For those who may say that overstaying a visa in not a crime, see 8 U.S. Code § 1325 (law.cornell.edu)
Any alien who ... (3) attempts to enter or obtains entry to the United States by a willfully false or misleading representation or the willful concealment of a material fact, shall, for the first commission of any such offense, be fined under title 18 or imprisoned not more than 6 months, or both, ...
If an illegal obtained a temporary visa with no intention of ever leaving, that visa was obtained with a "false or misleading representation" and is punishable by criminal penalties.