I'm going to fly to the United States in october. The problem is that i got my visa 1.5 years ago when I had short hair and beard. Will it be a problem that I have now a longer hair and beard? I'm also going to renew my passport soon so I need to know if I must cut my hair for the new passport so the pictures in the passport and visa will be the same or I can keep growing my hair.
edit: The problem is I do not own a biometric passport yet, and some of my friends had warned me about that the haircut can cause problems and they can even decide to not let me enter to the country. I don't know what should I do