Chicago —

The heavily armed agents carrying out President Donald Trump’s aggressive immigration enforcement push in Chicago are often masked. The man leading them is not.

Nearly three decades into his career with the US Border Patrol, Gregory Bovino has become the on-the-ground face of Trump’s effort to surge federal law enforcement into blue states and cities regardless of whether local officials want them there — first in Los Angeles, now in Chicago, with other possible cities on deck.

But if he and his officers are an unwelcome presence or face interference from protesters, Bovino said he is not dissuaded.

“We’re going to carry out that mission,” Bovino said in an interview with CNN in Chicago on Tuesday. “And that’s paramount, or else we shouldn’t be here. We’re going to carry that mission out.”

He added that if “someone steps in the way, then … that may not work out well for them, and if we need to effect an arrest of a US citizen or anyone else, then we’ll do that.”

Local officials have described Bovino as leading a branch of law enforcement which deploys tactics that are frighteningly authoritarian and which has been styled into Trump’s own personal police force, used by the president as a cudgel against Democrat-led localities and the people — citizens and noncitizens alike — who live in them.

“I refuse to let Trump,