The leader of the National Police Association says the federalization of police in Washington, D.C., came after local politicians failed to take control of a spike in youth violence.

D.C. Attorney General Brian Schwalb late Thursday called a federal directive naming the head of the Drug Enforcement Administration as Washington’s “emergency police commissioner” unlawful and unenforceable.

Washington, DC, Police Chief Pamela Smith signed an executive order Thursday allowing DC police officers to share information about people not in their custody with federal immigration enforcement agencies such as ICE — as President Donald Trump continues his federal takeover of law enforcement in the nation’s capital and crackdown on illegal immigration.