It makes me wonder how they can claim to be conservative?
Because one thing is indisputable - no one is more anti-socialist than the Libertarians.
As for the border issue, it presupposes a lack of a welfare state. Illegal immigration wouldn't be as much of a problem if we didn't give illegals and legal immigrants free stuff once their little toes touch American soil.
Conservative is a mighty big bucket. Among the Libertarian's views are that gov't should not insert itself into the individual's life more than absolutely necessary. This includes lifestyles, drug use, sexual activities, ect. The gov't exists to protect, and provide basic necessities (fire, police, army).
While the Repubs may disagree on the specifics, the overall goals are similar. As the article indicated, you don't have to agree 100% with the party to be a party member in good standing. Personally, I disagree with our President on the way he is handling the borders. However, given his other strengths, I can still support him as the best man for the present times.