With the Day 1 policy of mass deportations looming with the Jan. 20, 2025, inauguration of President-elect Donald Trump, we’re now seeing a different kind of wall being built. Some mayors and governors are suggesting they will strengthen sanctuary policies to protect illegal immigrants from deportation, and Trump’s incoming border czar is saying he’s now willing to put these officials in jail for doing so. And this debate is raising broader questions around public support and the overall legality of sanctuary city policies.