It would be one of the most unpopular wars in U.S. history.
If Trump really wants a war he needs to go to the Libya road map; rope in some allies, make sure the U.S. does all the heavy lifting, get JSOC in there to rally the rebels and rouge Venezuelan army factions . . . provide no explanation to anyone.
If Maddie gets bumped off, send Pompeo down all smiles getting off the plane with a "we came, we saw, he died" T-Shirt. That is historically enough to appease LibDerp Nation into total acquiescence . . . oh wait, wrong party, never mind.