A star-studded musical celebration is in the works for the United States' 250th birthday, but more big acts have been backing away.

Trump's administration had publicised multiple headliners for a 'Freedom 250' concert series between 25 June and 10 July, but Bret Michaels, Martina McBride, Young MC and the Commodores all confirmed they were pulling out.

This leaves Vanilla Ice, Milli Vanilli, and Flo Rida in the lineup, but Trump is reportedly considering cancelling the musical performances altogether. 

US correspondent Richard Arnold says Trump is considering hosting a 'Make America Great Again rally' instead.

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