I have a suggestion. Visit your local District/State Attorney's Office. Ask they how many open cases they have with the following criteria -
1. The Defendant is a Criminal Alien.
2. The Defendant is accused of committing a violent felony.
3. The Defendant fled back across the Mexican border to avoid prosecution.
In my county of 800,000 citizens, our District Attorney's Office has a unit that handles the prosecution of most child sex crimes. On that unit's case load there are over 200 Defendants who are accused of raping children under the age of 14 who meet the criteria above. That's at least 200 children who were sexually assaulted by a criminal alien who will most likely never see justice. That's 200 families effected by a horrible crime that should never have happened because the perpetrator should never have been in the United States to begin with.
That's just the cases with children who are victims of sexual assault. There's thousands more who are fugitives from justice for crimes such as -
Aggravated Robber
Aggravated Assault with a Deadly Weapon
Manufacture and Delivery of a controlled Substance (Meth/Heroin)
Those who do get caught generally just plead guilty for a probation sentence and then are immediately deported back to Mexico. They often come back under another assumed named.
This is my reality. This is my world.