Hi Sstrathdee, welcome to the community! Thank you for getting in touch to raise this to us!
You can view information about roaming in the US here.
As Ben has advised sadly we do not have plan options for the USA.
It is also worth reading our article about using your mobile abroad to ensure you have everything set up correctly before you go!
Do you have a dual SIM handset? This may be an option for you to explore.
Please let us know if you have any other questions we can help with!
All the best.
Molly