The reality is that all immigrants, illegal or not, improve this country.
They generally increase growth, thus reducing past debts.
They are valuable as consumers to sell things to, as well as producers.
And the reality is that those who think immigrants only want things for free, that is not true, as the US simply does not give out much of anything for free.
Just public schools and ER services.
Which is not enough to cause anyone to come here.
Great way to state that you are not an American. Certainly, no doubt remains in anyone's mind.
Care to even begin to define your meaning or terms?
For example, if you are referring to this country, it is the USA, not America.
America is a hemisphere or part of a descriptor for a continent.
As far as who is indigenous, that would be the native North American tribes, who likely are of Asian descent, walking across the Bearing Straits about 15,000 years ago.
But specifically, I was born in WI, 3rd generation immigrants, from Austria and Netherlands ancestors.
Anyone who understands economics at all, knows that all people are net economic gains, producing and buying more, thus paying more taxes and increasing the local economy.