If you're not from a treaty country, you wouldn't be eligible for the E-2 visa. However, other visa options, such as the L-1 or H-1B, may still be available depending on your situation.

Yes, to be eligible for the E-2 Treaty Investor Visa, you must be a national of a treaty country. The United States only grants this visa to citizens of countries with which it has a bilateral treaty of commerce and navigation. If your country does not have such a treaty, you will not be able to apply for an E-2 visa.