Canadian Snowbirds Act of 2023 This bill establishes a nonimmigrant visa for qualified Canadian citizens. The Department of Homeland Security may admit as a visitor a Canadian citizen who (1) is at least 50 years old, (2) maintains a residence in Canada, (3) owns a U.S. residence or has signed a rental agreement for the duration of the stay, (4) is not inadmissible or deportable under various provisions, (5) will not engage in U.S. employment except for services for the visitor's employer in Canada, and (6) will not seek U.S. assistance or benefits. Such visitors may be admitted for up to 240 days out of any single 365-day period.