Alex Vitale writes in The Nation that Trump's tactic of inviting federal forces into cities is not new, and that in the case of ongoing Operation Relentless Pursuit, Democratic mayors are inviting Trump's federal forces into their cities. Why?
https://www.thenation.com/article/society/operation-relentless-pursuit/
"The bigger question is why big-city Democratic mayors are embracing Trump’s tough-on-crime reelection strategy. Each of these cities applied to be part of ORP; the Justice Department did not unilaterally impose it on them."