I'm not for open borders, or Third World immigration. The current welfare system will attract an unlimited number of people wanting to mooch off it. The right to associate also means that people have the right to choose to NOT associate with some.
Here is the Libertarian position on immigration, your personal position is of no importance.
“”COMPLETE PLATFORM TEXT
INDIVIDUAL RIGHTS AND CIVIL ORDER
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.
The Principle: We hold that human rights should not be denied or abridged on the basis of nationality. Undocumented non-citizens should not be denied the fundamental freedom to labor and to move about unmolested. Furthermore, immigration must not be restricted for reasons of race, religion, political creed, age or sexual preference. We oppose government welfare and resettlement payments to non-citizens just as we oppose government welfare payments to all other persons.
Solutions: We condemn massive roundups of Hispanic Americans and others by the federal government in its hunt for individuals not possessing required government documents. We strongly oppose all measures that punish employers who hire undocumented workers. Such measures repress free enterprise, harass workers, and systematically discourage employers from hiring Hispanics.
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.””