am also in the same situation, and some people told me u have to register a
business in US first. is that right?

You can purchase a business in the U.S. but you will need to have someone who
lives in the state where the business is located to act as your "registered
agent." You will need to register the business in the U.S. unless it is
already registered. If you plan to change the name of an existing business,
then you will need to comply with the laws of the state in which the business
is located.

As Jtowbin mentioned, if you have access to a small business development
center or a SCORE office in the state in which the business is located, that
is a good starting place. You will also need an attorney and an accountant to
help you through the purchase process, so you may want to contact one or both
early on.

Hi, Check out the resources available in our Starting a Business section, including information about registering your business. Another great resource is SCORE, one of SBA's resource partners. SCORE is a nonprofit association comprised of thousands of volunteer business counselors throughout the country. They are trained to serve as advisors and mentors to aspiring entrepreneurs and business owners (at no cost to you). You can find your local office or set up an online meeting to chat with someone about your questions. Good Luck!