Sanctuary Jurisdictions: Congressional Action and President Trump's Interior Enforcement Executive Order [February 15, 2017] [open pdf - 126KB]
"President Trump's executive order (EO) 'Enhancing Public Safety in the Interior of the United States' issued on January 25, 2017, seeks, among other things, to penalize 'sanctuary jurisdictions.' The latter is an informal term referring to states and localities that limit their cooperation with federal agencies on immigration law enforcement. In the immigration context, the EO may raise legal questions about the extent to which states and localities must comply with federal immigration law enforcement efforts and the potential consequences for not cooperating with these efforts."
CRS Insight, IN10653
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html