The US has imposed visa restrictions on Ghana nationals, accusing the West African country of refusing to accept the return of Ghanaians it wants to deport, AFP reported.
The move, which goes into effect on February 4, will also affect the domestic staff of diplomats posted to the US.
"Secretary of State (Mike) Pompeo has ordered consular officers in Ghana to implement visa restrictions on certain categories of visa applicants," the Department of Homeland Security said in a statement.
"Without an appropriate response from Ghana, the scope of these sanctions may be expanded to a wider population," it said.
Washington said it had been discussing the matter with the Ghanaian authorities since July 2016.
Some 7,000 Ghanaians are living illegally in the United States, according to the US embassy in Accra.
There was no immediate comment from the Ghanaian government.