To reiterate what others have said, it isn’t and won’t be necessary to actually round up all illegals - just make a few examples and the rest will self-deport before long. Couple it with an effective border fence, denial of jobs, denial of welfare benefits, and penalties for those states, counties and cities that offer sanctuary status, and very few will try to come ILLEGALLY after that.
As for the gangs, give them one warning and 30 days to leave. The purpose of the warning is to avoid needless risk to our police and the federal agents that would be involved, plus the risk to innocents. After that, however, go after them with overwhelming force all over the country on the same day or during the same week. No breaks for these criminals/drug dealers.
FYI, Ike did this starting in 1954, and illegal immigration declined by 95% in 5 years. Ironically, Senator Prescott Bush (JEB’s grandfather) was a close friend and political ally of Ike’s...so JEB calling those who oppose a similar policy shows his ignorance that this can be done. https://www.conservativereview.com/Commentary/2015/08/jeb-orielly-unaware-of-ike-on-immigration
“...so JEB calling those who oppose a similar policy shows his ignorance that this can be done.” https://www.conservativereview.com/Commentary/2015/08/jeb-orielly-unaware-of-ike-on-immigration
_________________________
Should be: “so JEB SAYING IT CAN’T BE DONE [Emphasis added] shows his ignorance....”