When do you think the H-4 regulations giving EAD will become in operation? Will they be changed or will they remain the same?
Timing is impossible to predict. It could be as early as September or so, or as late as the government wants it to be. Also, government CAN and often does change or modify regulations after comments from the public are reviewed.
What kind of visa can I get for medical treatment. I have an appointment with a Surgeon in Anderson. Can the visa be extended without leaving America?
Typically, medical treatment in the USA is undertaken on a B-1 ("Business" visa. Strange, huh?). But do not get confused. Consulates often mark visas as B-1/B-2 or even B-2 (visitors/tourist) for medical treatment. Once here, you can ask for extensions of stay if the circumstances so require. I remember extending the stay of a child and his parents for two years (in 6-monthly chunks), where the baby was being treated for ongoing medical problems.