If I have no insurance can I go to hospital?
Anyone in the US can go the hospital without insurance. In an emergency, anyone will be treated, but without insurance, you may be billed full price.
However, if you have low income and you qualify you may be enrolled in Medicaid on the spot.
Unpaid hospital bills cost taxpayers around $40 to $50 billion. As the ACA expands coverage fewer Americans have to wait until an emergency to get the care they need. That being said, even without insurance, you should never put off a trip to the hospital if needed. Check out some other non-emergency options for the uninsured here.