Homeland Security Secretary Markwayne Mullin said on Monday he does not need to halt international flight processing at New Jersey’s Newark Liberty International Airport, citing cooperation from state and local law enforcement officials near a detention center that houses illegal aliens.

“As long as we continue to have this partnership with local and state law enforcement, then there’ll be no ​need to do so,” Mullin said at a press conference in Dallas.

New Jersey Gov. Mikie Sherrill on Friday ordered state police to assume control ⁠outside a detention center in Newark that had become a weeklong flash point ​for clashes between protesters and federal Immigration and Customs Enforcement agents.

Sherrill, a Democrat, said she was ⁠acting to quell escalating tensions and violence outside Delaney Hall, the 1,000-bed jail operated by the private company Geo Group.

Mullin again acknowledged he had a plan to pull customs agents from the airport to assist with security efforts at Delaney Hall, but he said it was not needed because of efforts by state and local law enforcement.

On Thursday, Mullin had warned that the Trump administration could soon stop processing international travelers and cargo at Newark Liberty. Major airlines, travelgroups, and business organizations on Friday warned that barring border processing at Newark Liberty or other major U.S. airports could lead to chaos, strand thousands ⁠of tourists and Americans trying to get home, and prevent crucial cargo shipments.

Mullin has repeatedly said he ⁠could also ⁠halt immigration processing at more than a dozen other airports that serve what the Trump administration calls “sanctuary cities,” including Boston, Denver, Philadelphia, Chicago, Los Angeles, Seattle, and San Francisco.

Shutting down all international flights in the 18 airports serving these cities would result in a more than $70 billion hit to the economy and affect 68 million international passengers a ​year, the U.S. Travel Association said.

Foreign visitors are expected to stream in for this month’s soccer World Cup, jointly hosted by the U.S., Canada and Mexico. The final will be ​held July 19 in East Rutherford, New Jersey, about 12 miles (19.31 km) from Newark airport.