Is this a fair law?
Probably not. It would be silly to assume that any group of elected legislators could actually write a "fair" law.

Does it promote a radical racial and ethinic profiling scare?
Probably. You're not likely to see too many white's getting stopped.

Should the United States pursue stricter law enfocment against illegal aliens?
Absolutely!

Or should we grant amnesty to existing illegals?
Absolutely NOT!

What are the imigration issues of other countires in the world?
What difference does that make? We have to protect our own infrastructure, our own jobs, our own ways of life. Illegal immigration threatens all of them. That being said, though, I would venture to guess that most countries have much stricter immigration policies than the US.

How do other countries handle imigration issues in comparison to the USA?
Again, what difference does that make?

What do you think about "Countries without borders"?
Never heard of it, but after a brief browse through Google I'd have to say it's a silly idea. Unless you can eliminate all racial, religious or regional strife, unless you can get everyone to speak the same language, it's just a pipe-dream. Borders are there for a reason, whether you like them or not.