Trump to see first test on war powers
Ana FaguyReporting from Capitol Hill
For the first time since the strikes on Iran began, US President Donald Trump will be tested on whether he has the authorisation to launch the military action.
The vote on the War Powers Act has been scheduled in the senate for 16:00 local time (21:00 GMT) on Wednesday.
The measure is aimed at limiting Trump's ability to wage military operations - but given the growing number of unknowns surrounding the conflict and previous lack of authorisation during other administrations, it will face an uphill battle.
Secretary of State Marco Rubio argues "there's no law that requires the President to have done anything with regards to this".
"No presidential administration has ever accepted the War Powers Act as constitutional - not Republican presidents, not Democratic presidents," he added.
The senators who introduced the measure - Tim Kaine, a Democrat from Virginia, and Rand Paul, a Republican from Kentucky - have said they want it on the record how senators feel about the administration's action.
"[Senators will] Vote on whether we want to send our own kids – our own sons and daughters, the most precious resource we have in this country – into a war that could end up like the wars we have just recently exited in the same region,” Kaine said.
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