The State Department has announced it is placing the South Asian nation on a special watch list, pursuant to 2016 legislation.
The step is not thought to carry serious consequences, but it comes in the wake of stiff criticism from President Donald Trump this week.
On Monday, Mr Trump reiterated US concerns that Pakistan provides safe havens for militants, saying it had played US leaders for "fools".
The administration is currently holding up 255 million US dollars in military assistance for Pakistan until it cracks down on extremists threatening Afghanistan.
