Wikipedia cites Cato as being critical of neo-con foreign policy and the Iraq War.
https://en.wikipedia.org/wiki/Cato_Institute#Libertarianism....
https://en.wikipedia.org/wiki/Cato_Institute#On_foreign_poli...
Do you know what neo-con means? Serious question
Neoconservativism and libertarianism are very different ideologies, by the way. Perhaps the out-group homogenity bias is at work? [1]
Unless it's a big corp causing harm to people in which case they fight tooth and nail to prevent any kind of legislation that might fix the issue see discouraging tobacco smoking, global warming, coal pollution, fracking and so on.
Of course a libertarian think tank would argue for drug legalization; that's not surprising at all. (I say this as one who also supports drug legalization, whose politics are in many ways diametrically opposite to libertarianism.)
Especially since we all have agendas, and I like to think I'm fairly objective.