Se você estiver viajando por terra ou por mar, poderá entrar no Canadá e nos EUA apenas com seu green card.
Se você estiver viajando de avião, precisará de um passaporte ou do cartão NEXUS.
I have U.S. residency (Green Card). Do I need a visa or an eTA to visit Canada or can I use my Green Card?
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When travelling by land or sea directly from the U.S., you will only need to provide proof of your U.S. lawful permanent resident status (such as your Green Card).
O material omitido diz respeito aos requisitos da eTA para os titulares de green card, mas a partir da página Duplos cidadãos canadenses precisam de um passaporte canadense válido , podemos ver que os cidadãos canadenses não são elegíveis para o eTA, de modo que o material não se aplica a você. Para voar para o Canadá, você precisa de um passaporte canadense.
What documents do I need to present to reenter the United States?
If seeking to enter the United States after temporary travel abroad, you will need to present a valid, unexpired “green card” (Form I-551, Permanent Resident Card). When arriving at a port of entry, a U.S. Customs and Border Protection Officer will review your permanent resident card and any other identity documents you present, such as a passport, foreign national I.D. card or U.S. Driver’s License, and determine if you can enter the United States. For information pertaining to entry into the United States, see U.S. Customs and Border Protection’s webpage.
A falta de um requerimento de passaporte para portadores de green card é encontrada em 8 CFR 211.2 (a) (2) :
§ 211.2 Passports.
(a) A passport valid for the bearer's entry into a foreign country at least 60 days beyond the expiration date of his or her immigrant visa shall be presented by each immigrant except an immigrant who:
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(2) Is entering under the provisions of § 211.1(a)(2) through (a)(7);
Onde 8 CFR 211.1 (a) (2) diz:
§ 211.1 Visas.
(a) General. Except as provided in paragraph (b)(1) of this section, each arriving alien applying for admission (or boarding the vessel or aircraft on which he or she arrives) into the United States for lawful permanent residence, or as a lawful permanent resident returning to an unrelinquished lawful permanent residence in the United States, shall present one of the following:
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(2) A valid, unexpired Form I-551, Permanent Resident Card, if seeking readmission after a temporary absence of less than 1 year, ...