1) I want you to know that even in Japan child poverty is a problem.
2) I want you to know that even in Japan child poverty is an issue.
1) & 2) "日本でも子供の貧困が問題なのを知ってほしい" という訳出です.
日本でも:even in Japan.
子供の貧困が:child poverty is.
〇〇問題なのを:that 〇〇 is a problem / that 〇〇 is an issue.
知ってほしい:I want you to know.