SAN FRANCISCO (AP) — San Francisco officials plan to take another run at clarifying the progressive city's protections for people in the country illegally, a policy that led to national criticism last year when a Mexican man was accused of shooting and killing a woman walking along a waterfront pier.

The Board of Supervisors will consider a proposal Tuesday that says law enforcement can only turn over criminal suspects to federal immigration authorities if they are charged with a violent crime and have been convicted of a violent crime within the last seven years. That would be the only time city workers, including police officers, could disclose immigration status.

But San Francisco's sheriff has resisted the limitation, saying she wants greater discretion over what is a relatively small pool of detainees. Sheriff Vicki Hennessey, as a constitutionally elected official, does not have to follow the board's orders.

Earlier this month, the measure's chief sponsor postponed a board vote on the ordinance, saying he wanted everyone on the same page. Supervisor John Avalos said the sides have been trying to reach a compromise, but he was prepared to vote Tuesday regardless.

Eileen Hirst, Hennessey's chief of staff, said the sides are still talking.

Advocates of sanctuary protections say a clear division between local law enforcement and federal immigration authorities is needed to foster trust. The law dates back to 1989.

The killing of Kate Steinle in July 2015 and the arrest of Juan Francisco Lopez-Sanchez put San Francisco's leaders on the defensive as critics and outside politicians called for a change in the city's sanctuary law.

The sheriff at the time cited the law in defending the release of the man, a repeat drug offender and habitual border-crosser. He lost re-election to a candidate who said she would have considered greater communication between the city and federal government.

Hennessey has said that the office receives about five requests a week to notify Immigration and Customs Enforcement of a detainee's status. She has not notified ICE in any of those cases, she said.

Hennessey also said that, like her predecessor, she may have ignored ICE's request for notification about Lopez-Sanchez, but at least she would have reviewed his case.