Albania, Argentina, Armenia, Australia, Austria, Azerbaijan
Bahrain, Bangladesh, Belgium, Bolivia, Bosnia and Herzegovina, Bulgaria
Cameroon, Canada, Chile, Colombia, Costa Rica, Croatia, Czech Republic
Denmark, Democratic Republic of Congo
Ecuador, Egypt, Estonia, Ethiopia,
Georgia, Germany, Grenada,
Iran, Ireland, Israel, Italy,
Jamaica, Japan, Jordan,
Latvia, Liberia, Luxembourg,
Mexico, Moldova, Mongolia, Montenegro, Morocco,
Pakistan, Panama, Philippines, Poland,
Republic of the Congo, Romania,
Senegal, Serbia, Singapore, Slovenia, South Korea, Sri Lanka, Suriname, Sweden, Switzerland,
Taiwan, Thailand, Togo, Tunisia, Turkey,
Ukraine, United Kingdom
The difference between the E-1 and the E-2 Visa are that the E-1 visa is a Treaty Trader Visa and the E-2 is an Investor Visa.
The E-1 visa is a Treaty Trader visa for individuals involved in the exchange, purchase or sale of goods and services or merchandise.
The E-2 visa is an Investor visa that allows individuals of a treaty country to be admitted to the US to conduct international trade.
At least 50% of the exports/imports must be to/from the United States and must be substantial.