Bogota, Colombia - Colombia has offered to pay for the "dignified" deportation of its citizens from the US, the foreign ministry said Friday, a week after a public spat between presidents Gustavo Petro and Donald Trump over the removal of migrants.

The two leaders had issued threats and counter threats of major trade tariffs of up to 50%, and Washington's embassy in Bogota stopped issuing visas from Monday to Friday in retaliation for Petro's refusal to allow US military planes to return Colombian migrants to their country.

Petro had accused the US of treating the migrants like criminals, placing them in shackles and handcuffs.

Colombia's foreign ministry said Friday it had proposed to Mauricio Claver-Carone, Trump's special envoy for Latin America, that Bogota would "immediately assume the transfer of all citizens deported by the United States," covering transportation costs for its nationals, according to a statement.

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Petro has said his government would not allow expelled migrants to travel in handcuffs.

The Trump administration had announced this week a series of sanctions against Colombia, before backtracking, with the White House saying Bogota had accepted its conditions and reversed course.

On Tuesday and Wednesday, Colombian military and civilian aircraft repatriated the first groups of migrants to Bogota.

According to Petro, hundreds of Colombians, including several children, were returned to their country in "dignified" conditions. None of them were "confirmed criminals," he added.

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Colombia is expecting the return of around 27,000 migrants whose deportation orders have been signed in the last six months by the Trump administration or that of his Democratic predecessor Joe Biden, a Colombian presidential source told AFP.

Trump has pledged to carry out the largest deportation campaign in US history, vowing to expel millions of undocumented immigrants, many from Latin American nations.