Saudi Arabia is the cause for their suffering. But if that many Americans did, there would actually be like 10 million donated. Still not enough.This could be a good thing if it was more organized and coordinated instead of a bunch of random white girls posting viral tweets.
At times like this is when the government should step up, imagine the US or British government opening up banks to donate to in order to donate to.
If the average donor donates $3 and 1/100 americans donate. That would easily be 3 million dollars for any cause. The government themselves could also chip in as well to match whatever the citizens donate.
Saudi Arabia at times like this would be the best aid. They're neighbouring Yemen with more than enough resources to help. Plus Yemenis share a very similar culture and language. I have no idea why Saudi Arabia isn't helping as much as they could