[Conservative Coulter Fan]

Even Mises opposed "open borders" -

"These considerations are not a plea for opening America and the British Dominions to German, Italian, and Japanese immigrants. Under present conditions America and Australia would simply commit suicide by admitting Nazis, Fascists, and Japanese. They could as well surrender directly to the Fűhrer and to the Mikado. Immigrants from the totalitarian countries are today the vanguard of their armies, a fifth column whose invasion would render all measures of defense useless. America and Australia can preserve their freedom, their civilization, and their economic institutions only by rigidly barring access to the subjects of the dictators."--Mises

A Libertarian Argument against Open borders

[ansel12]

You can pretend that libertarians are against open borders, libertarians do a lot of that kind of switch and bait but they are now and always have been for totally open borders.

Here is the wording from the 2004 Party Platform

Libertarian Party Platform 2004:

Immigration
The Issue: We welcome all refugees to our country and condemn the efforts of U.S. officials to create a new "Berlin Wall" which would keep them captive. We condemn the U.S. government's policy of barring those refugees from our country and preventing Americans from assisting their passage to help them escape tyranny or improve their economic prospects.

Transitional Action: We call for the elimination of all restrictions on immigration, the abolition of the Immigration and Naturalization Service and the Border Patrol, and a declaration of full amnesty for all people who have entered the country illegally.

[ansel12]

Amazing, that link you posted takes one to a FR thread with five posters on it that evidently did not think to look at the party platform.

Out of those five posters, 3 of them have been banned, including the guy that posted the thread.