President Trump's firing of FBI Director James Comey has serious implications for the relationship between the FBI and the White House. What should we keep in mind as the story unfolds?
Read MorePresident Trump says self-styled "sanctuary cities" are breaking the law. But are cities under any actual obligation to enforce federal immigration law? And is there any evidence for Trump's claim that sanctuary status is linked with higher incidence of crime? David answers these questions and explains why many local law enforcement agencies want nothing to do with immigration enforcement.
Read MoreCan President Donald Trump order local law enforcement to practice stop-and-frisk policing?
Read MoreWhat will the U.S. Department of Justice look like under President Trump? And how will its role in overseeing local law enforcement change? We unpack a few of the possible scenarios.
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