According to the mayor, while federal agents in violation of the order would not be arrested by Chicago police, the city will take the federal government to court if necessary.

So yeah… nope, they’re not going to enforce it.

Bold-faced has been used at least since the late 1900s https://www.merriam-webster.com/grammar/is-that-lie-bald-faced-or-bold-faced-or-barefaced