Can I apply for a Portugal D7 Visa Application while I'm outside the United States?

You must be physically present in the US when applying for any visa categories or residency visa for Portugal through the VFS Portugal Visa Application Center in the United States.

However, you can visit Portugal to get the necessary documents. An example would be obtaining a NIF number, opening a Portuguese bank account, and signing a lease.

For instance, you can apply in the US, visit Portugal and return back when your visa is approved to get the stamp on your passport.