"Fact is, they are no different than us & our ancestors, it's just different times, different means & different reasons."

So...they're not different from us, except for everything different? ... What? There's a difference between expansion and what's happening now. If they're seeking a better life, sure, great, we're all for it, just DO IT LEGALLY. As has been said, illegal immigration is an insult to those immigrants who came in legally and now are upstanding citizens.

"Secondly, terrorism isn't a border or immigration issue at all, they may overlap at parts but they are seperate arguments, we have terrorism here in Belfast, by our own citizens"

America isn't worried about its own citizens becoming terrorists. It has happened, somewhat, but the threat now is from outside the country. And those people would have to get in, through...where? Our borders! Amazing ain't it? They are seperate arguments, of course, as everything else, but they coincide.

Here's an idea. Why don't we just make one big global government? Topple every country's government, make a one-world currency, make common laws, codes, etc. for every part of the earth, and we'd all be one big happy family and live happily ever after? That way there'd be no need for immigration, no borders, nothing to seperate everybody. And hey, wouldn't you know it, there wouldn't be an America to protect from the millions of people willing to give their life to take the life of one or more of us. Good plan, huh? (I'm not going to ask if everybody else thinks that's stupid, because there are some people that just ain't at that level.)

By the way. I was born in America. Haven't tried to move out. Didn't have to move in. I didn't come here, kill everybody who stood in my way, and build a house. You know what? Neither did my parents. And, wouldn't you know it, their parents didn't do that either! You see a pattern here? Nobody's trying to conquer a new land, they're trying to enter a place that's already become prosperous through the hard work of its people.

And three hundred years ago, there was no such thing as "legal/illegal immigration".

I will say again. I support legal immigration. If you're using the argument that "oh, these people are just trying to make a better life for themselves", then why don't they do it legally?