How do I become a certified pranayam teacher so that I can teach in U.S.?

What a noble thought again, let me ask you, are you doing the pranayam every day 1st ? Are you spreading the word to others about the benefits of these practices, are you willing to spend a lot of time with people on a regular basis and are determined to keep trying to help people, when there are only a few and far between people who are willing to listen to you, even when you are teaching it selflessly and free ? If the answeres are all affermetive then you can go to Patanjali yog peeths site and look for a Teachers training camp in Haridwar, India. Learn, practice , teach and be happy !!!!