Mayor Cherelle L. Parker ’s office declined to comment on Trump’s post Thursday. Parker has been largely quiet on the issue of sanctuary cities, even as activists have increasingly called on her to defend the city’s policy, which former Mayor Jim Kenney made a cornerstone of his tenure.

Trump signaled that he will soon take the legally dubious step of denying federal funds to sanctuary cities, claiming that they are “death traps.” He attempted to do something similar in his first term,

Trump — who has promised to execute the largest mass deportation of undocumented migrants in US history — said he was “working on papers to withhold all Federal Funding for any City or State that