Police across Europe needs to function as "ONE UNIT" says President Ricardo Baretzky of ECIPS

Functioning as one unit is an idea, but what country or politician would want some other police force leading them. This leads to the lost of sovereign rule. Would they want US Police ruling, controlling or managing their police force? Would we desire that Canada be in charge of US FBI? What about China.
Europe has had the Germans in charge of the police forces....1940-45?