I have paid the IV fee for my mothers application (IR5) and we are in the process of collecting the documents required to submit to NVC. Since this process and the subsequent appointment appears to take atleast 3-6 months overall, is it possible for her to get a tourist visa at this point and enter US on that visa? She had a 10 year tourist visa that expired in June 2011 and she visited US 4 times in the last 10 years with the last one in 2010-2011. So she will be applying for a new tourist visa. Also if she does enter US on tourist visa, how should she approach the IV? Can I change it from a consular processing to something else? Appreciate your help.