[x]

Seems like libertarians are now globalist “free traders” and open border advocates.

Weren't they always?

Tariffs and Quotas
Like subsidies, tariffs and quotas serve only to give special treatment to favored interests and to diminish the welfare of other citizens. We therefore support abolition of all tariffs and quotas as well as the Tariff Commission and the Customs Court. First Libertarian Platform (1972)

[catnipman]

but not one word about open borders in 1972 ...