Rather than flaming you I'll be kind.
There are quite possibly hundreds of threads regarding this on this forum. (And quite a few in Wannabes).
The short answer is the majority of places in the States will let you block hire, and you don't need to limit yourself to training organisations either.
Search the threads for all the tips (1-800-wxbrief for example)and amongst other things check the fuel reimbursement rate. A stingy rate will rack up your costs significantly. Also, you won't need a visa, but the paperwork to get your FAA cert will take around 2 months. Again, search for exact details.
Enjoy