They could have made an ad that highlights the will to succeed without focusing on an illegal immigrant mother and daughters journey to enter the country illegally. It would have been more powerful for that point if they showed someone going through the process of legally entering the country because of a desire to succeed. They didn't do that and instead tried sentimental BS to tug at heart strings. You would have to be rather naïve if you really think this isn't pro illegal immigration just trying to hide behind the idea of "will to succeed".