Advancing Mutual Interests and Growing Our Success Act or the AMIGOS Act This bill makes Portuguese nationals eligible for E-1 and E-2 nonimmigrant visas if the government of Portugal provides similar nonimmigrant status to U.S. nationals. The bill also imposes additional requirements on such visas. An E-1 visa is for individuals entering the United States to engage in international trade, while an E-2 visa is for individuals investing a substantial amount of capital in the United States. Both are limited to nationals from countries that have a treaty of commerce and navigation with the United States. Furthermore, under this bill, if an alien who has never received an E visa became the national of an E visa-eligible foreign country by making a financial investment in that foreign country, that alien must have been domiciled in that foreign country for a continuous period of at least three years at any point before applying for an E visa.