The same issue bothers me as well. I don't need visa to visit the states as a tourist(I need one to work there though). What if my startup will be accepted at Y

The same issue bothers me as well. I don't need visa to visit the states as a tourist(I need one to work there though). What if my startup will be accepted at YCombinator, will I be able to go there and work on my startup without work permit?