If a US green card holder marry a Canadian citizen will she become a Canadian citizen?

Answer 1

No. Assuming that there are no other legal impediments to your entering Canada, you could get into Canada. You could apply for permanent resident status - something you should do BEFORE you arrive in Canada. Being married to a Canadian citizen would probably be a big advantage. Getting Canadian citizenship is a whole other process. Before you can apply, you have to have lived in Canada for three years without interruption or, in some cases, for three of the last four years. If you meet all of the requirements, THEN you can become a Canadian citizen. Being married to a Canadian will help with that. But marrying a Canadian will NOT automatically make you a Canadian citizen.

Answer 2

A green card holder IS a legal resident. "Green card" is the common name given to permanent resident ID issued to immigrants granted that status (even though the card is no longer green in color).

FYI, effective June 26, 2013, the US federal government recognizes same-sex marriages, including for Immigration purposes. Beginning on that date, an American citizen may sponsor a foreign same-sex spouse for permanent residency ("green card"). Once a foreigner has a green card, he or she may eventually apply for citizenship when the applicable requirements are met.

Answer 3

Currently, no. No foreigner has yet been able to obtain legal immigration status in the United States by virtue of same-sex marriage to an American citizen. Some binational same-sex couples have had their deportation proceedings dismissed, however, since the federal government states that deporting law-abiding aliens with family ties is not a priority.