Dan Froomkin writes
Former President Bill Clinton enthusiastically weighed into the blistering national debate on immigration today with a resounding assertion that America needs more immigrants — not fewer — to ensure its long-term fiscal future. ...And looking at the overall budget numbers, comparing money in to money out, "I don`t think there`s any alternative for us but increasing immigration," he said. "I just don`t see any palatable way out of this unless that`s part of the strategy."
Which is why California, the state with the highest proportion of immigrants and children of immigrants, is in such great fiscal shape compared to, say, North Dakota.