Can I get a 4G data plan for my unlocked iPhone 5 in the US?

I have a factory unlocked iPhone 5 bought from my home country. I'll be travelling to the US, and I was wondering if I can get a short 4G data plan (six months) from any carrier in the US? *Last year, I went to the US and T-Mobile specifically couldn't offer me a 1-month 3G for my iPhone 4, only edge speeds, but I read rumors about recent support of these features... Hence my question.*