It’s not the USA only which is to be blamed.

A quote from the world reads:

“Cost to end World hunger is $30 billion. Cost the USA spent on its defense, $737 billion per year”.

Who should do it?
Not individuals but governments for the ‘biggest’ part.

Why?
The governments of the world collects money from many wealthy people of the world.

Again, why?
Therefore, it must spend on “worthwhile” things such as these.

If not?
It’s simple really —> as the story of the “rich man & Lazarus” or Christ’s denouncing of the wicked goes —> the point “includes” this “too” in meaning:

‘As your own words, didn’t care or considered it “not” your problem’ —> therefore, so shall “your starvation” in Hell —> be ‘not’ the problem of God” (crux meaning of “same” judgment meted back to you).

As for those who have helped to feed the hungry in even the “smallest” efforts in any place, it’s a condition “required” for righteousness —-> but ‘not’ yet a “sufficient”, one, which is “done” in “Him” (not for self-exaltation – God Will Judge this Perfectly on that Great Day).

P/S:

If you don’t care (this is what “you sow”), and thus neither may God care (this is what “you reap” in Hell/Gehenna too) when the “same” Judgment (so you will “feel” your own words/actions too) is meted back to you (e.g. in “starvation”) as these two verses imply when ‘combined’:

“Do not be deceived: God cannot be mocked. A man reaps what he sows.” – apostle Paul (Galatians 6:7)

“For in the way you judge, you will be judged; and by your standard of measure, it will be measured to you.” – Lord Jesus Christ (Matthew 7:2)

Remember, God Will solve all problems in “time” (into the age/ages which are coming) when “He” is ‘Revealed’. Now, is the time for “human beings” to prove themselves “first”.

Note also the phrase in the verse above, “God cannot be mocked” (and you may clearly see the gist of the argument as to ‘how’ as well in this discussion).