WorldNetDaily writer Burt Prelutsky has written a great article on the mindset of the left.

On thier view of the Constitution: 

The thing that has me stumped is trying to figure out what leftists want. For example, when left-wing judges take it upon themselves to legislate from the bench, liberals are quick to say that the Constitution is a living document and that it has to evolve to accommodate a changing world. However, whenever a conservative suggests that the 14th amendment, which grants automatic citizenship on any person born in America, ought to be changed to deny that gift to those born to illegal aliens, those same people carry on as if the Constitution, like the 10 Commandments, was carved in stone.

On "anchor babies" for illegal immigrants:

To suggest that the child, the beneficiary of his parents' illegal act, doesn't profit is patently absurd. To argue that he shouldn't be deprived of the advantage because he didn't break the law, is ridiculous. You might as well suggest that if a bank robber gives his ill-gotten gains to his wife and kids, the family should get to keep the loot because, after all, they weren't the ones who drove the getaway car.

Go, read.  It's worth the effort.