Have you googled hiring adapted cars (hand controls) in the States? Have you contacted Motability to see if they could sign post you to a company in the USA?
Alamo: https://www.alamo.com/en_US/car-rental/customers-with-disabilities.html
Enterprise: https://www.enterprise.com/en/help/customers-with-disabilities.html
Joss
Current car: BMW X2 sDrive 20i M Sport 5dr Step Auto In metallic Portimão Blue. 04:10:2025
Previous car:Peugeot 308 GT Premium 1.2 Pure tech Petrol.