Last week, a Pennsylvania Senate bill that would block police departments from immediately releasing the names of officers involved in shootings made it a step closer to law — it was moved out of committee and scheduled for a floor vote.

It’s the latest in a handful of bills in state legislatures across the country that cropped up after the emergence of the Black Lives Matter movement and an increased push for police departments to identify officers who shoot civilians.

Nationwide, those bills have failed to become law. In Pennsylvania, they have a chance.

Pennsylvania’s bill, sponsored by Rep. Martina White (R., Phila.), is a direct response to the Philadelphia police’s policy of  disclosing the names of officers involved in shootings no later than 72 hours after the incident, as long as there are no credible threats to the officer. That's a policy backed by the U.S. Department of Justice.

Arizona, Oregon, and Virginia legislatures have all considered similar laws to slow the identification of officers who fire their weapons.

But these measures are more easily proposed than passed — if the Pennsylvania bill passes, it would be the first of those measures to actually make it into law.

The bill was set for a vote Monday, but Senate Republicans decided they wouldn't act immediately. "It's being passed over on our calendar," Jenn Kocher, a spokeswoman for the Senate Republican majority, said Monday.

White’s bill would block police departments from revealing the identities of officers in shootings until an investigation is completed, or until 30 days have passed since the shooting. Anyone who does so beforehand — besides local district attorneys or the state attorney general — could be charged with a second-degree misdemeanor.

The American Civil Liberties Union and other police reform advocates oppose the bill.

“Police officers work for the public. They have the power to use deadly force, and if they’re going to have that power they have to be accountable and transparent to the public,” said Andy Hoover, the legislative director for Pennsylvania’s ACLU chapter. “This bill is the opposite of transparency.”

Its backers say it will protect police in the aftermath of a controversial shooting -- a spokesman for White said the measure was aimed at establishing a "cooling-down period" after a shooting, and added White has spoken to police officers who said they had faced threats from people they have arrested. The local Fraternal Order of Police has pushed the bill themselves, and hosted the press conference where White announced the bill last year.

Pennsylvania has a Republican-controlled legislature, and H.B. 1538 may well pass if it does make it to the floor this week — there are only three days left in this legislative session.

In Arizona, the state legislature passed a bill to shield officers’ names for 60 days after a shooting, but Gov. Doug Ducey vetoed it in March 2015. He said he worried that the law could have escalated tensions in the wake of a shooting.

In Oregon, after one of the militia members occupying a wildlife refuge there was shot and killed by police, lawmakers quickly pushed a bill that would have allowed police to petition courts to shield the name of an officer involved in a shooting, if there was a credible threat to the officer. That bill has been buried in committee for months.

Philadelphia’s 72-hour policy was instituted last year, after protests over the shooting of Brandon Tate-Brown in December 2014 — the department did not release the names of the officers involved for several months. The new 72-hour policy was a first for the department, and was in line with recommendations from the Department of Justice and a presidential policing task force chaired by then-Police Commissioner Charles H. Ramsey.

“I don’t think you can reasonably expect to shoot people and remain anonymous,” he told the Daily News later that year, when White announced her bill.

A spokeswoman for the Philadelphia police said that if the bill passes, the department will abide by the law.

In some cases, departments decline to release the names of officers involved in shootings at all. Pittsburgh, for example, won't have to change its policies at all if H.B. 1538 passes — police there don't release names of officers who shoot unless those officers are charged with a crime.