We should learn from Canada. Conservatives were able to get Sikhs, Chinese and even African immigrants to vote for them because they reached out to immigrant populations. I know this first-hand. These immigrant groups have been a key to Conservative Party dominance in western Canada for years. One thing to keep in mind, though, is that one way conservatives appeal to them is by demonstrating how idiotic it is for Canada to be filled with so many slackers, Indians on welfare, etc. These immigrant groups have no patience for that kind of sh!t. In other words, these immigrants would absolutely love to get behind a Romney campaign if Romney had been vocal and proud of his "47%" comments.
Canada has a merit based immigration system. Ours is based primarily on a kinship system. Chain migration or family reunification drives the vast majority of the 1.2 million legal immigrants that enter this country each year. And our immigration policies are not related to our job or skill needs. During the decade that ended in 2010, which saw the highest number of immigrants in our history, we actually saw a net loss of jobs for the same period.