Did you even read the article? He entered the country on a tourist visa and never left. That is entering the country illegally. Getting married and applying for adjustment of status does not give him legal status. He should rightfully be deported.
Except most US voters disagree with you. Someone married to a US citizen does have residency rights, notwithstanding the paperwork quirk that you're supposed to exit and re-enter, which typically involves flying somewhere going to the US embassy to get a stamp and flying back. So just as most people don't support the death penalty for speeding, most people don't support criminal deportation for someone who has the right to be in the US but for whatever reason (perhaps lack of money or perhaps fear of strip searching and disappearing to the gulag) didn't follow the proper process. Because most voters don't see this situation as a crime and certainly not one requiring deportation, the law doesn't treat this situation as a serious crime, or actually a crime at all.
If you want to aggressively going after folks who have skirted immigration rules perhaps the place to begin is in the east wing (if it still existed).
He has resided and worked in the country illegally for 16 years. Getting married at the end of that time doesn't automatically grant you legal status, you have to apply for adjustment of status at which point they will review your history with adhering to US immigration law. He could have chosen to be deported, per the terms of the visa waiver program he entered on, but he chose not to so he can wait in detention until the legal process he has repeatedly avoided proceeds.
Majority of Americans are against illegal immigration. Only liberal elites want it in order to stay in power. The people do not want this. Every poll confirms this.
No they weren't.