There are many paths to becoming a teacher in the United States. Licensing requirements vary from state to state. In general, one must have a bachelor's degree in education. You would also receive some specialized education depending on whom you want to teach. For example, if you want to teach math then you take classes to teach math. Then you would student teach for a period of time, sit for exams, and receive a license. Your first step should be to decide on who and what you want to teach. Then figure out what state you want to teach in. Then find an education program in that state and attend there. FYI, I'm a professor and train school library media specialists (licensed teachers) in the state of Minnesota. If you have other questions, please feel free to ask me.

Hi Jessica. In addition to what Dr. Molaro said, you will also need to get a visa. At the post-secondary , graduate or post-graduate levels, the university or college which hires you might sponsor you, but if you want to teach at the secondary level (high school or below), you will probably need to get yourself in country on your own before anyone will hire you (or even before you could qualify for a teaching certificate).