a. poverty studies among western countries are are conflicting and very subjective.
that's true, but no matter how "conflicting and subjective," somehow Finland always comes out above Haiti, and the U.S. always comes out below Finland. Go figure!
the poverty levels in the US are highly impacted by massive immigration.
That's a different discussion, and another of your true statements. The impact of immigration on aggregate poverty levels among first and second generation immigrants has been dramatic, as you imply. For example the the following immigrants dramatically reduced the poverty level among immigrants just by existing: Einstein, Levi Strauss, Sergai Brin (google, he did a lot to impact the aggregate poverty level!), Dikembe Mutombo (NBA), Joseph Pullitzer, Elizabeth Claiborne (think cosmetics), Madeleine Albright (Secretary of State; her dad, Jospeh Korbel, another immigrant, founded the Korbel School of International Relations at my Alma Mater and produced another U.S. Sec. Of State,
Condoleezza Rice) Edward Teller, Jan Koum (WhatsApp), Isabel Allende (Presidential medal of Freedom winner), Freddy Adu (U.S. soccer star; here because his mom won the green card lottery), Oscar de la Renta, Steve Chen and Jawed Karim (YouTube) , Arianna Huffington, Mariano Rivera (Yankees pitcher), Arnold Schwarzenegger (California Governor). And I could go on for not a hundred more pages but a few thousand more pages. You get the idea though. WE need immigrants! This would be a horribly dull place without them. Just a bunch of indians chasing after buffalo.
Oh, did I forget to mention Enrico Fermi.
Which Indian tribe do you trace your own non-immigrant, non-rapist, non-murderer background to?