The US state department is happy to let governments know that US passports are property of the US government and may only be held under very limited circumstances. https://www.law.cornell.edu/cfr/text/22/51.7#:~:text=CFR-,%C....
The real issue in gulf is not paying livable wages mainly. Anything else is comparable to farm workers in Europe.
https://www.hrw.org/news/2012/09/30/bahrain-abuse-migrant-wo...
Unfortunately it's not well policed, many hotels and office receptions try to do so when they issue you a badge but I always refuse.
Your home country can't refuse you entry, regardless of identification. Deportees don't get to stay in the US just because they lost their passport.
"An emergency travelling document" will allow you to go from anywhere in the world to ONLY your home country and its usually easier to get.