Answer:In the past few years, sanctuary policy has emerged as a point of tension between federal, state, and local authorities. On Jan. 25, 2017, President Donald Trump issued an executive order (EO), addressing immigration enforcement issues, including the use of state and local law enforcement.
The EO would, among other things: Withhold funds from sanctuary jurisdictions, revive 287(g) immigration enforcement partnerships with the Department of Homeland Security (DHS), end the Priority Enforcement Program, and reinstitute "Secure Communities." NCSL's summary can be found here and the blog can be found here.
On May 22, 2017 the U. S. attorney general issued a memo stating that sanctuary jurisdictions are those that willfully refuse to comply with 8 U.S.C. 1373 and that such jurisdictions are not eligible to receive federal grants administered by the Department of Justice or DHS. Section 1373 prohibits state and local jurisdictions from restricting communication to federal officials of information regarding citizenship or immigration status. The attorney general, on July 22, 2017, posted a solicitation with new grant conditions for Edward Byrne Memorial Justice Assistance Grant Programs, requiring federal immigration be given access to detention facilities and 48 hours advance notice of the release of immigrants wanted by federal authorities.
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