As a foreigner, the first thing you need to start the process to apply to open a company in the USA will be a VISA.

There are more than 30 temporary and permanent visas, of which
3 are the most recommended for those who want to start a business in the United States:

• E-2 Visa: For people who can show how they will run a successful business in the cou ntry or want to buy an already formed company.
• E-1 Visa: for importers and exporters from countries with which there is currently an
  international trade agreement. Exclusively for citizens belonging to nations with which
  there is an international trade agreement and wish to move to the United States to
  manage their business.
• L-1 Visa: For foreign business owners who want to expand in the United States. It is
  issued for at least one year meeting certain requirements about the company that is
  already owned in the country of origin, such as income, bank accounts, among others.
• What is important to note is that it is not necessary to be a US resident or citizen to create
  a company in the US.
  Once you have the VISA you can establish the structure and location of your company.
  Popularly, most foreigners opt for C corporations or a limited liability company (LLC).
  C corporations can expand by giving unlimited shares, profits (they will pay double tax)
  are taxed twice at the corporate level and at the level of dividends distributed to
  shareholders.

On the other hand, LLCs can be formed by a single partner and enjoy tax advantages
such as the imposition of a single tax at the individual level.

Once the identity is defined, we will choose the state where to establish th e company.
Being the United States a federal country, the most advisable thing is to incorporate it in
a state that dominates the market that it will have and that the regulations play in its favor.
In the case of Latin American residents, Florida is the most recommended because of its
language, proximity and familiarity with cultures. Delaware is also one of the attractive
states in terms of tax and regulatory flexibility.
For foreign residents outside the USA who wish to start a business in the USA, they must
opt for the services of an Authorized Fiscal Agent who will receive any type of legal and
fiscal document in the name of the company that they wish to open.

Once we have the above, we will proceed to register our company with the corresponding
forms and requirements according to the state that has been chosen. Some basic
requirements are as follows:

• Name of the company
• Commercial address

Select a person who will be in charge of receiving the legal documents for the company.
At this point, a company with a physical address in the United States can serve as that
connection agent.
Fill out a certificate of incorporation to the Department of State or to the Division of
Corporations of the respective State with all the data of the company, its shareholders
and members.
When registration is complete, it’s time to GET an Employer Identification Number (EIN).
This requirement is essential to be able to hire employees in the United States, open a
bank account, be able to pay taxes and/or be able to obtain a business license. The EIN
can be applied for in a variety of ways, including online from the IRS website. Contact us
for more information on opening a business abroad.

How to start a business | USAGov. (s.f.). Official Guide to Government Information and
Services | USAGov. https://www.usa.gov/espanol/como-start-business