I am sure there is proof of this?
Casus Belli need be invoked at the time of the violation.
Use it or lose it, otherwise, it is gone.
The United States has had many times and incidents throughout the years which were never invoked. It does not now mean the U.S. can go to war with nations that had once wronged us.
France and England supported the confederacy during the civil war, does that now give the US government the right to declare war on them? That is how dumb your logic on this is.
That is the job of interpol and other policiing organiations.
Unless, perhaps, there is real proof that the government of Venezuela is involved in this drug trade, in which case, that evidence should be brought before congress, and let them make this decision, as is proscribed in the Constitution.
The point here, is that Trump dick suckers who voted for him and bragged that he kept the U.S. out of war, will, now, as I predicted, make excuses for war mongering not authorized by congress.