States will not comply, they will fudge the numbers, they will slow-roll implemtation, and they will use legal wordsmithing to change the legal definition of a "crime".
The Feds just need to exercise their rights under the Federal Supremancy Clause to round them up, and deport them post haste. Also, fiscally punish state, county, municipal, and academic entities that do no comply with Federal or obstruct Federal law enforcement action.
Words on paper will not change Blue State behavior. Laws written by political wusses will not resolve the issue.
We have oodles of laws ... Dems are selectively choosing not to enforce them nor comply with them.
The criminal illegal alien immigrant foreigner situation is not a law problem, it is a Law Non-Enforcement problem.