I am a US citizen. I would like to bring money into the US. What is the best way to enter the money into the US? Any advices, please? I came to the US about 6 years ago as an immigrant. Now, I would like to bring money from back home "Iraq", I sold my house, to the US to start a buisness or buy a house?

Another question, I am the US citizen as I mentioned above, is that possible my dad becomes my business partner (he does not have any sort of the US resident)?
The amount I am talking about is round 100k.
Thank you so much for your advise
Looking forward to hearing from you soon

Best