A new Cook County ordinance that touches the hot-button issue of immigration is allowing inmates out of the county’s jail and making waves in other parts of the country.

The ordinance, approved Wednesday by the County Board, halts compliance with Immigration and Customs Enforcement requests that certain inmates stay in jail up to two business days beyond what their criminal cases require. The requests, known as detainers, give ICE time to pick up the inmates for possible deportation.

Sheriff Tom Dart’s office says by Friday afternoon the jail had freed 11 jail inmates named in ICE detainers.

ICE took custody of 721 Cook County inmates on detainers this year and 1,665 last year, according to Dart’s office. “I guess that’s it,” spokesman Steve Patterson says.

The ordinance requires the jail to free such inmates unless the federal government agrees in advance to pay for the extended confinement. ICE says the feds don’t reimburse any local jurisdiction in the country for those costs.

“It’s like a godsend,” says Carlos Torres, 29, of North Lawndale.

Torres says Chicago police last month arrested his father after finding narcotics in a car in which he was a passenger. Torres says his father, a Mexico native, has an expired green card and that his U.S. record includes a burglary conviction. “So that would make him more likely to get deported,” Torres says.

ICE found out Torres’s father was in the jail and put a detainer on him. But the ordinance gives the inmate a better chance of walking free after a court appearance Tuesday. “I’m relieved,” Torres says.

Jesús García, D-Chicago, and other commissioners who backed the measure say detainers violate inmates’ due-process rights and erode community trust in local cops.

“You have many localities and state legislatures trying to do immigration policy,” García says. “We’re not best equipped to do this.”

García says local governments are stuck with the job until Congress overhauls the nation’s immigration laws.

Those localities have some cover from a federal court ruling in Indiana this summer. The ruling says compliance with ICE detainers is voluntary.

Still, a few Cook County commissioners have qualms about ignoring them. “Under this ordinance, gang bangers and people involved in drug dealing, sex trafficking and criminal sexual assault will be released back into our communities,” Timothy Schneider, R-Bartlett, said during Wednesday’s County Board meeting. “This is clearly our Willie Horton moment.”

A Massachusetts prison released Horton, a convicted felon, as part of a weekend furlough program in 1986. He did not return and committed violent crimes that came back to haunt Gov. Michael Dukakis in the 1988 presidential campaign.

ICE sounds a similar alarm. “ICE has not sought to compel compliance through legal proceedings [but] jurisdictions that ignore detainers bear the risk of possible public safety risks,” the agency said in a statement about the Cook County vote.

Asked whether ICE will take the county to court to compel compliance, the agency did not answer.

The ordinance, meanwhile, is reverberating beyond the county. “For a long time we felt like we were in this alone,” says Juniper Downs, lead deputy counsel for Santa Clara County, California. “Cook County’s bold policy may affect the direction of the policy we develop.”

At least three other counties — Taos and San Miguel, both in New Mexico, and San Francisco in California — have limited the sorts of inmates they’re holding on ICE detainers. None has gone as far as Cook County, which is ignoring the detainers altogether.