According to an article on news.yahoo.com: “Mitt Romney may adopt a softer tone on illegal immigration now that the long and divisive primary is all but over and he gears up for a head-to-head battle with President Barack Obama.”
Would Romney softening his stance on immigration be smart politics? Of course. However, one can argue that a candidate who changes his stance so easily does not actually have a genuine position on the issue and may say or do whatever is politically convenient to get his hands on the keys to the White House. This makes it hard to predict what Romney would support or oppose if he were to get elected.