See commentary -- first link below by J. Tobin of JNS --

Many years ago we had the idea that the U.S. should pressure Arab countries to create economic opportunities in their countries -- which US and maybe other countries could help sponsor-- to create incentives for Palestinians to create new lives -- similar to how the Jews and other immigrants found new lives in the USA.

After World War II how many people were in displaced person (DP) camps? And what happened to them? Most created new lives...

Here are a few links with info useful to a consideration of this issue.

Palestinians Return To Northern Gaza In Gaza City

  --JRC

Trump says send them to other countries...

https://www.smithsonianmag.com/smart-news/what-happened-wwiis-last-million-displaced-people-180975799/

http://dpcamps.org/migration.html

https://www.myjewishlearning.com/article/displaced-persons-after-the-holocaust/

https://ehne.fr/en/encyclopedia/themes/migrations-in-europe/migrations-and-persecutions/refugee-resettlement-in-united-states-after-world-war-ii