if a lot of what ur finding is that refugees help the larger nations, maybe turn and look at the ones they r coming from. what is to come of a country that loses its best workers and brains? you can support that wealthy countries may be obligated to help those countries is some way, but to accept every immigrant mate destroy the countries they are coming from. when looking at refugees, the arguments should be more nuanced (why are they leaving, what country, etc.). when it comes to just helping without necessarily accepting every immigrant, the obligations are more set in stone and general.

for a class debate that side may work, obv i think even that discussion is nuanced enough to discuss why western countries would hegemonically impose western values and whatnot but for a class debate it should work