"The U.S. Marshals Service is drafting a sanctuary policy that would limit the agency’s ability to hold illegal immigrants for pickup by ICE, The Washington Times has learned. Under the policy, marshals would not be able to hold illegal immigrants for pickup by U.S. Immigration and Customs Enforcement on the say-so of an immigration warrant, or “detainer” request. Once the Marshals Service is finished processing an immigrant for its custody purposes, the person is to be released even if ICE has asked for a hold. Officials said the policy is still in draft form, though The Times knows of one jurisdiction in Florida where it has already been implemented, according to a memo sent to employees this summer.
“Per our management staff, effective immediately, we will NOT house a prisoner based solely on an administrative immigration detainer,” a deputy wrote to fellow deputies in the Fort Lauderdale office. The office said marshals will give “a reasonable amount” of advance notice so ICE can try to send officers to detention facilities in time to pick up immigrants. ICE officers told The Washington Times that the policy change will be a blow. They said a bigger worry is that other Justice Department agencies will follow suit. The Federal Bureau of Prisons turns over an even larger number of migrants to ICE."
https://www.washingtontimes.com/news/2022/aug/17/federal-sanctuary-marshals-service-stop-holding-il/