I’m not suspicious. The land wasn’t shared, it was taken by force and the people it was taken from were either massacred or rounded up onto reservations where they slowly die out from poverty today. Nothing today can change what was done; that doesn’t make open borders and unlimited immigration penance for our historical wrongs.

>Being selective about who a country allows in as a resident or citizen isn’t immoral.

Maybe not, if the selection process were primarily concerned with individual merit. But it isn't. We decide which races to allow as residents or citizens, then throw the individuals into a lottery, with good odds for white countries and bad odds for brown ones. Discriminating on ancestry or proxies for ancestry (like nationality) to keep underprivileged groups down and privileged groups comfortable is immoral. So is denying others the same opportunities benefitted from merely because they came later.

Would your own family tree's entrypoints to the US pass your test?