That does not really describe what’s happening. The fix for asylum laws being abused is legislative, and in the last year fixes have been scuttled by Republican legislators.
Sanctuary city laws are pretty reasonable policy statements about when a city cooperates in deporting illegal immigrants who may otherwise be law abiding. This makes perfect sense as a policy when you operate in an immigration regime that makes legal immigration infeasible for all kinds of necessary labor, from farm workers to domestic help and even high skilled IT.
If Texas wanted to call California’s bluff on housing policy, it would also reject the middle and high income households moving to the Triangle from high housing cost California suburbs. But it’s not principled when it comes to that — their money is welcomed! Heck, even the Florida model where they check if businesses are indeed employing legal workers in labor intensive industries like construction would be a more faithful enactment of law and order values with respect to immigration. Anything short of that is its own form of sheltering.