Paul does not advocate tariffs. You made that up.
He opposes NAFTA because it creates another regulatory body that “manages” trade. That isn’t free.
Well, he's voted against reducing them. And many of his supporters mention tariffs when queried about how revenue lost by eliminating the income tax will be made up. You'll note their mention in 47 and 53.
But if you're telling me Paul is opposed to tariffs, I'll take your word for it since it's a minor issue.