IF YOU JUST BECAME A RESIDENT AND NOW HAVE AN ACTUAL SS# INSTEAD OF AN ITIN # CAN YOU GO BACK PREVIOUS YEARS LIKE 2014 AND 2015 AND DO AN AMENDED FORM

I JUST BECAME A RESIDENT THIS YEAR AND GOT AN ACTUAL SOCIAL SECURITY # AND IN PREVIOUS YEARS I WAS USING AN ITIN # CAN I DO AN AMENDED RETURN FOR 2015 AND 2014 TO CHANGE THE ITIN TO THE SS BECAUSE I SHOULD BE GETTING MORE MONEY ON PREVIOUS YEARS IF I HAD A SS#