(CNN) — President Donald Trump has notified Congress he is moving to cancel $4.9 billion in congressionally approved foreign aid using a rare “pocket rescission,” drawing criticism from Democrats and at least one top Republican senator who questioned the legality of the move.

The Office of Management and Budget’s proposal to claw back the funding this late in the fiscal year sets it up to be canceled if Congress doesn’t consider the proposal – and for a potential legal battle with major stakes in the months ahead.

CNN’s Sarah Ferris contributed to this report.

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