Canadian Snowbird Visa Act This bill authorizes the Department of Homeland Security to admit into the United States qualifying Canadian citizens as long-term nonimmigrant visitors. A qualifying Canadian citizen is an individual who (1) is at least 50 years old, (2) maintains a Canadian residence and owns a U.S. residence or has rented a U.S. accommodation for the duration of the individual's stay, (3) is not inadmissible or deportable, (4) will not engage in employment or labor for hire in the United States other than for a non-U.S.-based person or entity by whom the Canadian citizen was employed in Canada or for whom the Canadian citizen performed services in Canada, and (5) will not seek certain forms of assistance or benefits. A qualified individual may be admitted for up to 240 days during any single 365-day period. The spouse of such person may be admitted under the same terms, except that he or she is not required to separately satisfy the requirement for owning or renting a residence in the United States. The bill grants a person so admitted nonresident alien tax status.