Can friends send job invitations when they immigrate to the United States and start a company in the United States?

First of all, do you know if your friend runs his own company or invests in immigration?

If you are an investment immigrant, your friend has no right to exercise the company.

So he can't let the company hire you.

If your friend starts his own company,

Then you have to ask your friend if the size of the company is eligible to apply for a work visa.