The immigration order bars the use of federal money for migrants in the country illegally, directing all agencies to identify any federally funded programmes that do so.

The executive action also ensures that federal funds cannot be used by state or local “sanctuary” jurisdictions, according to the White House. Sanctuary cities prevent local law enforcement from assisting federal civil immigration officers.

In another order, Trump instructed the heads of every agency to undertake a review of all regulations, working with members of Elon Musk’s Department of Government Efficiency. Any regulations that are deemed inconsistent with the administration’s policies will be rescinded or modified, the order said.

The action aims to bolster Musk’s sweeping government-slashing effort, which is facing numerous court challenges over its lawfulness.

Trump also targeted a number of advisory committees and agencies for elimination, part of his broader campaign to assert control over independent executive agencies.

Among the agencies set to be disbanded are the US institute for peace, which promotes conflict resolution around the world; the inter-American foundation, which funds community development programmes in Latin America and the Caribbean; and the US African development foundation, which invests in community development efforts in Africa.

Trump signed the new orders on Air Force One during a flight from Florida back to Washington.