The Boston Trust Act bars local police from keeping immigrants in custody for possible deportation by federal officials unless a criminal warrant has been issued for the person’s arrest. What is your opinion of this policy?

Live caller, mobile/landline poll of likely voters in the September Boston mayoral preliminary election conducted July 13-16. Margin of error +/- 4.4 percentage points.
Chart: CHRISTINA PRIGNANO/GLOBE STAFFSource: Suffolk University/Boston Globe