June 26 (UPI) -- The U.S. State Department on Thursday unveiled a new visa restriction policy, targeting family members and close personal and business associates of those sanctioned on accusations of being involved in drug trafficking.

"This will not only prevent them from entering the United States, but it will serve as a deterrent for continued illicit activities," Thomas Pigott, State Department principal deputy spokesperson, said Thursday during a regular press briefing.

"We will continue to use all necessary tools to deter and dismantle the flow of fentanyl and other deadly drugs from entering our country."

Drug trafficking has been central to President Donald Trump's crackdown on immigration, as he vowed during his election campaign to increase border security and carry out mass deportations.

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