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Obama to announce major US immigration changes

US President Barack Obama is set to announce his plans to use overriding executive powers to enact major changes to immigration policy.

He will unveil his strategy in a televised address on Thursday night, he said in a video posted on Facebook.

The action could lift the threat of deportation for up to five million undocumented migrants.

The BBC's North America editor Jon Sopel reports.

Jon Sopel reports from Washington.

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