Subject: Re: Trump makes demands
That is certainly true but I think ICE only issues detainers for those who already have a deportation order or have a lengthy rap sheet regardless of the recent crime that got them arrested.

They certainly will issue detainers for those folks, but not only those folks. They can issue a detainer for anyone, depending on the current enforcement priorities.

Because of that discretion, and the fact that a sizable proportion of people that are here unlawfully have a removal order (more than 10%, including a number of folks who came here as kids), jurisdictions with large unlawfully-present populations have concerns that cooperating with federal immigration enforcement will lead to folks reducing cooperation with law enforcement. Reasonable minds can disagree about whether that concern justifies a sanctuary policy or not, but it is one of the main factors behind those policies that local governments balance.