Attorney General Jeff Sessions said the U.S. will take a stricter stance on illegal crossings at the Mexico border by separating parents from children, rather than keeping them together in detention centers.

“If you are smuggling a child then we will prosecute you, and that child will be separated from you as required by law,” Sessions said Monday at a law enforcement event in Scottsdale, Ariz. “If you don’t like that, then don’t smuggle children over our border.”

“If you cross this border unlawfully, then we will prosecute you. It’s that simple,” Sessions added, describing the new policy as zero tolerance. “We are dealing with a…