Citizenship in the US is a profoundly broken system with a horrendous and racist past, and using it to decide who deserves the benefit of the social contract and who doesn’t is actively buying into the nationalistic and false idea that Americans are superior just because they were born somewhere and foreigners weren’t.
You wouldn’t argue that black slaves weren’t worthy of US protection and services until the 14th Amendment was passed, would you? You wouldn’t pretend like the US granting and then revoking citizenship from Mexican settlers repeatedly in the 19th and 20th century was acceptable, would you? Was the Chinese Exclusion Act acceptable?
A foreign life is worth exactly the same as an American life, and the difference is completely arbitrary.