Would President trump get Congress to unanimously vote to go to war if another country attacks the USA?

I know this weekend it’s being debated in the USA whether Trump followed the construction in ordering the strike in Iran. But I’m curious in today’s political climate could all in Congress vote to support potus if the USA had been attacked like it was on 9/11? Or would he not win congressional approval?
Would President trump get Congress to unanimously vote to go to war if another country attacks the USA?
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