The number of immigration enforcement officers in Minnesota could be reduced, but only if state and local officials cooperate, US President Donald Trump’s border tsar said on Thursday, noting he had “zero tolerance” for protesters who assault federal officers or impede the ongoing operation in the Twin Cities. Tom Homan addressed reporters for the first time since the president sent him to Minneapolis following last weekend’s fatal shooting of protester Alex Pretti. AdvertisementVowing to stay until the “problem’s gone”, he seemed to acknowledge missteps while warning protesters they could face consequences if they interfere with federal officers. Nothing’s ever perfect,” Homan said. AdvertisementHe added later: “But threatening law enforcement officers, engaging and impeding, and obstruction, and assault is never OK, and there will be zero tolerance.”