...To unite families and lovers who are separated by state borders, and reduce the cost of their travel and reunion. ...To unite innovators with a competitive labor market. ...To facilitate the entry of innovative minds into the U.S.A. so that the coming Singularity will more likely take place in the freest country that exists, so that there is a better chance it will be benevolent towards humanity. ...To allow everyone to pursue the American dream of a free market, filled with opportunity. ...And to allow the leaders of the U.S.A. to escape the possible future post-Singularity retribution of those who have been separated from each other by the current unjust and immoral governments of the world. On every advanced, libertarian philosophical level, open borders makes sense. Keeping borders closed is an injustice, and an unfreedom. Also, it fits with the truncated "social tolerance" portion of the current regime's platform, given their lawsuit against Arizona, while striking a blow against non-libertarian "conservatives," painting them into a corner, politically. Also, fully open borders would be a "full measure" where a "half measure" is inappropriate. . Stop "cracking down" on employers who hire undocumented immigrants. Stop deporting nonviolent undocumented immigrants. Long live America!