President Obama has broken the record for highest number of deportations.
Yes, some of the deportees are criminals, but over all, immigration is a good thing. Granted the less free the United States becomes, the weaker the moral imperative to allow people from even less free nations come here, but still.
Even if your moral compass doesn't point toward the freedom of movement as an inherently good thing and you don't believe in natural rights, look at the numbers. And the science.
Immigrants Create More Wealth Than Native-Born Americans
A recent report from the Partnership for a New American Economy found more than 40 percent of Fortune 500 companies were founded by immigrants or their children. Eighteen percent (or 90) of the 500 companies had immigrant founders. The children of immigrants started another 114 companies. (A copy of the report can be found here.)
Immigrants Bring American DNA
Geneticists have shown that there is literally such a thing as American DNA, not surprising when nearly all of us are descended from immigrants. We therefore carry an immigrant-specific genotype, a genetic marker expressing itself—in some environments, at least—as energetic risk-taking and competitive self-promotion.